1. Regulations
  2. title 49
  3. chapter II
  4. part 236
  5. subpart G
  6. § 236.722

Collapse to view only § 236.722 - Circuit, cut-in.

§ 236.700 - Definitions.

For the purpose of these rules, standards, and instructions, the following definitions will apply.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.700

§ 236.701 - Application, brake; full service.

An application of the brakes resulting from a continuous or a split reduction in brake pipe pressure at a service rate until maximum brake cylinder pressure is developed. As applied to an automatic or electro-pneumatic brake with speed governor control, an application other than emergency which develops the maximum brake cylinder pressure, as determined by the design of the brake equipment for the speed at which the train is operating.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.701

§ 236.702 - Arm, semaphore.

The part of a semaphore signal displaying an aspect. It consists of a blade fastened to a spectacle.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.702

§ 236.703 - Aspect.

The appearance of a roadway signal conveying an indication as viewed from the direction of an approaching train; the appearance of a cab signal conveying an indication as viewed by an observer in the cab.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.703

§ 236.704 - [Reserved]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.704

§ 236.705 - Bar, locking.

A bar in an interlocking machine to which the locking dogs are attached.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.705

§ 236.706 - Bed, locking.

That part of an interlocking machine that contains or holds the tappets, locking bars, crosslocking, dogs and other apparatus used to interlock the levers.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.706

§ 236.707 - Blade, semaphore.

The extended part of a semaphore arm which shows the position of the arm.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.707

§ 236.708 - Block.

A length of track of defined limits, the use of which by trains is governed by block signals, cab signals, or both.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.708

§ 236.709 - Block, absolute.

A block in which no train is permitted to enter while it is occupied by another train.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.709

§ 236.799 - Section, fouling.

The section of track between the switch points and the clearance point in a turnout.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.799

§ 236.800 - Sheet, locking.

A description in tabular form of the locking operations in an interlocking machine.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.800

§ 236.801 - Shoe, latch.

The casting by means of which the latch rod and the latch block are held to a lever of a mechanical interlocking machine.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.801

§ 236.802 - Shunt.

A by-path in an electrical circuit.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.802

§ 236.802a - Siding.

An auxiliary track for meeting or passing trains.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.802a

§ 236.803 - Signal, approach.

A roadway signal used to govern the approach to another signal and if operative so controlled that its indication furnishes advance information of the indication of the next signal.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.803

§ 236.804 - Signal, block.

A roadway signal operated either automatically or manually at the entrance to a block.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.804

§ 236.805 - Signal, cab.

A signal located in engineman's compartment or cab, indicating a condition affecting the movement of a train and used in conjunction with interlocking signals and in conjunction with or in lieu of block signals.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.805

§ 236.806 - Signal, home.

A roadway signal at the entrance to a route or block to govern trains in entering and using that route or block.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.806

§ 236.807 - Signal, interlocking.

A roadway signal which governs movements into or within interlocking limits.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.807

§ 236.710 - Block, latch.

The lower extremity of a latch rod which engages with a square shoulder of the segment or quadrant to hold the lever in position.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.710

§ 236.808 - Signals, opposing.

Roadway signals which govern movements in opposite directions on the same track.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.808

§ 236.809 - Signal, slotted mechanical.

A mechanically operated signal with an electromagnetic device inserted in its operating connection to provide a means of controlling the signal electrically, as well as mechanically.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.809

§ 236.810 - Spectacle, semaphore arm.

That part of a semaphore arm which holds the roundels and to which the blade is fastened.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.810

§ 236.811 - Speed, medium.

A speed not exceeding 40 miles per hour.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.811

§ 236.812 - Speed, restricted.

A speed that will permit stopping within one-half the range of vision, but not exceeding 20 miles per hour.

[49 FR 3388, Jan. 26, 1984]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.812

§ 236.813 - Speed, slow.

A speed not exceeding 20 miles per hour.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.813

§ 236.813a - State, most restrictive.

The mode of an electric or electronic device that is equivalent to a track relay in its deenergized position.

[49 FR 3388, Jan. 26, 1984]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.813a

§ 236.814 - Station, control.

The place where the control machine of a traffic control system is located.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.814

§ 236.815 - Stop.

As applied to mechanical locking, a device secured to a locking bar to limit its movement.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.815

§ 236.816 - Superiority of trains.

The precedence conferred upon one train over other trains by train order or by reason of its class or the direction of its movement.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.816

§ 236.817 - Switch, electro-pneumatic.

A switch operated by an electro-pneumatic switch-and-lock movement.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.817

§ 236.711 - Bond, rail joint.

A metallic connection attached to adjoining rails to insure electrical conductivity.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.711

§ 236.818 - Switch, facing point.

A switch, the points of which face traffic approaching in the direction for which the track is signaled.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.818

§ 236.819 - Switch, hand operated.

A non-interlocked switch which can only be operated manually.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.819

§ 236.820 - Switch, interlocked.

A switch within the interlocking limits the control of which is interlocked with other functions of the interlocking.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.820

§ 236.820a - Switch, power-operated.

A switch operated by an electrically, hydraulically, or pneumatically driven switch-and-lock movement.

[49 FR 3388, Jan. 26, 1984]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.820a

§ 236.821 - Switch, sectionalizing.

A switch for disconnecting a section of a power line from the source of energy.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.821

§ 236.822 - Switch, spring.

A switch equipped with a spring device which forces the points to their original position after being trailed through and holds them under spring compression.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.822

§ 236.823 - Switch, trailing point.

A switch, the points of which face away from traffic approaching in the direction for which the track is signaled.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.823

§ 236.824 - System, automatic block signal.

A block signal system wherein the use of each block is governed by an automatic block signal, cab signal, or both.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.824

§ 236.825 - System, automatic train control.

A system so arranged that its operation will automatically result in the following:

(a) A full service application of the brakes which will continue either until the train is brought to a stop, or, under control of the engineman, its speed is reduced to a predetermined rate.

(b) When operating under a speed restriction, an application of the brakes when the speed of the train exceeds the predetermined rate and which will continue until the speed is reduced to that rate.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.825

§ 236.712 -

A pipe running from the engineman's brake valve through the train, used for the transmission of air under pressure to charge and actuate the automatic brake equipment and charge the reservoirs of the electro-pneumatic brake equipment on each vehicle of the train.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.712

§ 236.826 - System, automatic train stop.

A system so arranged that its operation will automatically result in the application of the brakes until the train has been brought to a stop.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.826

§ 236.827 - System, block signal.

A method of governing the movement of trains into or within one or more blocks by block signals or cab signals.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.827

§ 236.828 - System, traffic control.

A block signal system under which train movements are authorized by block signals whose indications supersede the superiority of trains for both opposing and following movements on the same track.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.828

§ 236.829 - Terminal, initial.

The starting point of a locomotive for a trip.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.829

§ 236.830 - Time, acknowledging.

As applied to an intermittent automatic train stop system, a predetermined time within which an automatic brake application may be forestalled by means of the acknowledging device.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.830

§ 236.831 - Time, delay.

As applied to an automatic train stop or train control system, the time which elapses after the onboard apparatus detects a more restrictive indication until the brakes start to apply.

[49 FR 3388, Jan. 26, 1984]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.831

§ 236.831a - Track, main.

A track, other than auxiliary track, extending through yards and between stations, upon which trains are operated by timetable or train orders, or both, or the use of which is governed by block signals.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.831a

§ 236.832 - Train.

A locomotive or more than one locomotive coupled, with or without cars.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.832

§ 236.833 - Train, opposing.

A train, the movement of which is in a direction opposite to and toward another train on the same track.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.833

§ 236.834 - Trip.

A movement of a locomotive over all or any portion of automatic train stop, train control or cab signal territory between the terminals for that locomotive; a movement in one direction.

Cross Reference:

Trip-arm, see § 236.744.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.834

§ 236.713 - Bridge, movable.

That section of a structure bridging a navigable waterway so designed that it may be displaced to permit passage of traffic on the waterway.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.713

§ 236.835 - Trunking.

A casing used to protect electrical conductors.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.835

§ 236.836 - Trunnion.

A cylindrical projection supporting a revolving part.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.836

§ 236.837 - Valve, electro-pneumatic.

A valve electrically operated which, when operated, will permit or prevent passage of air.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.837

§ 236.838 - Wire, shunt.

A wire forming part of a shunt circuit.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.838

§ 236.714 - Cab.

The compartment of a locomotive from which the propelling power and power brakes of the train are manually controlled.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.714

§§ 236.715-236.716 - §[Reserved]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.715-236.716

§ 236.717 - Characteristics, operating.

The measure of electrical values at which electrical or electronic apparatus operate (e.g., drop-away, pick-up, maximum and minimum current, and working value).

[49 FR 3387, Jan. 26, 1984]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.717

§ 236.718 - Chart, dog.

A diagrammatic representation of the mechanical locking of an interlocking machine, used as a working plan in making up, assembling and fitting the locking.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.718

§ 236.719 - Circuit, acknowledgment.

A circuit consisting of wire or other conducting material installed between the track rails at each signal in territory where an automatic train stop system or cab signal system of the continuous inductive type with 2-indication cab signals is in service, to enforce acknowledgement by the engineman at each signal displaying an aspect requiring a stop.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.719

§ 236.720 - Circuit, common return.

A term applied where one wire is used for the return of more than one electric circuit.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.720

§ 236.721 - Circuit, control.

An electrical circuit between a source of electric energy and a device which it operates.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.721

§ 236.722 - Circuit, cut-in.

A roadway circuit at the entrance to automatic train stop, train control or cab signal territory by means of which locomotive equipment of the continuous inductive type is actuated so as to be in operative condition.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.722

§ 236.723 - Circuit, double wire; line.

An electric circuit not employing a common return wire; a circuit formed by individual wires throughout.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.723

§ 236.724 - Circuit, shunt fouling.

The track circuit in the fouling section of a turnout, connected in multiple with the track circuit in the main track.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.724

§ 236.725 - Circuit, switch shunting.

A shunting circuit which is closed through contacts of a switch circuit controller.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.725

§ 236.726 - Circuit, track.

An electrical circuit of which the rails of the track form a part.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.726

§ 236.727 - Circuit, track; coded.

A track circuit in which the energy is varied or interrupted periodically.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.727

§ 236.728 - Circuit, trap.

A term applied to a circuit used where it is desirable to provide a track circuit but where it is impracticable to maintain a track circuit.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.728

§ 236.729 - Cock, double heading.

A manually operated valve by means of which the control of brake operation is transferred to the leading locomotive.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.729

§ 236.730 - Coil, receiver.

Concentric layers of insulated wire wound around the core of a receiver of an automatic train stop, train control or cab signal device on a locomotive.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.730

§ 236.731 - Controller, circuit.

A device for opening and closing electric circuits.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.731

§ 236.732 - Controller, circuit; switch.

A device for opening and closing electric circuits, operated by a rod connected to a switch, derail or movable-point frog.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.732

§ 236.733 - Current, foreign.

A term applied to stray electric currents which may affect a signaling system, but which are not a part of the system.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.733

§ 236.734 - Current of traffic.

The movement of trains on a specified track in a designated direction.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.734

§ 236.735 - Current, leakage.

A stray electric current of relatively small value which flows through or across the surface of insulation when a voltage is impressed across the insulation.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.735

§ 236.736 - Cut-section.

A location other than a signal location where two adjoining track circuits end within a block.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.736

§ 236.737 - Cut-section, relayed.

A cut-section where the energy for one track circuit is supplied through front contacts or through front and polar contacts of the track relay for the adjoining track circuit.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.737

§ 236.738 - Detector, point.

A circuit controller which is part of the switch operating mechanism and operated by a rod connected to a switch, derail or movable point frog to indicate that the point is within a specified distance of the stock rail.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.738

§ 236.739 - Device, acknowledging.

A manually operated electric switch or pneumatic valve by means of which, on a locomotive equipped with an automatic train stop or train control device, an automatic brake application can be forestalled, or by means of which, on a locomotive equipped with an automatic cab signal device, the sounding of the cab indicator can be silenced.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.739

§ 236.740 - Device, reset.

A device whereby the brakes may be released after an automatic train control brake application.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.740

§ 236.741 - Distance, stopping.

The maximum distance on any portion of any railroad which any train operating on such portion of railroad at its maximum authorized speed, will travel during a full service application of the brakes, between the point where such application is initiated and the point where the train comes to a stop.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.741

§ 236.742 - Dog, locking.

A steel block attached to a locking bar or tappet of an interlocking machine, by means of which locking between levers is accomplished.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.742

§ 236.743 - Dog, swing.

A locking dog mounted in such a manner that it is free to rotate on a trunnion which is riveted to a locking bar.

Cross Reference:

Element, contact. See receiver, § 236.788.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.743

§ 236.744 - Element, roadway.

That portion of the roadway apparatus of automatic train stop, train control, or cab signal system, such as electric circuit, inductor, or trip arm to which the locomotive apparatus of such system is directly responsive.

[49 FR 3387, Jan. 26, 1984]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.744

§ 236.745 - Face, locking.

The locking surface of a locking dog, tappet or cross locking of an interlocking machine.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.745

§ 236.746 - Feature, restoring.

An arrangement on an electro-pneumatic switch by means of which power is applied to restore the switch movement to full normal or to full reverse position, before the driving bar creeps sufficiently to unlock the switch, with control level in normal or reverse position.

[49 FR 3388, Jan. 26, 1984]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.746

§ 236.747 - Forestall.

As applied to an automatic train stop or train control device, to prevent an automatic brake application by operation of an acknowledging device or by manual control of the speed of the train.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.747

§ 236.748 - [Reserved]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.748

§ 236.749 - Indication.

The information conveyed by the aspect of a signal.

Cross Reference:

Inductor, see § 236.744.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.749

§ 236.750 - Interlocking, automatic.

An arrangement of signals, with or without other signal appliances, which functions through the exercise of inherent powers as distinguished from those whose functions are controlled manually, and which are so interconnected by means of electric circuits that their movements must succeed each other in proper sequence, train movements over all routes being governed by signal indication.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.750

§ 236.751 - Interlocking, manual.

An arrangement of signals and signal appliances operated from an interlocking machine and so interconnected by means of mechanical and/or electric locking that their movements must succeed each other in proper sequence, train movements over all routes being governed by signal indication.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.751

§ 236.752 - Joint, rail, insulated.

A joint in which electrical insulation is provided between adjoining rails.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.752

§ 236.753 - Limits, interlocking.

The tracks between the opposing home signals of an interlocking.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.753

§ 236.754 - Line, open wire.

An overhead wire line consisting of single conductors as opposed to multiple-conductor cables.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.754

§ 236.755 - Link, rocker.

That portion of an interlocking machine which transmits motion between the latch and the universal link.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.755

§ 236.756 - Lock, bolt.

A mechanical lock so arranged that if a switch, derail or movable-point frog is not in the proper position for a train movement, the signal governing that movement cannot display an aspect to proceed; and that will prevent a movement of the switch, derail or movable-point frog unless the signal displays its most restrictive aspect.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.756

§ 236.757 - Lock, electric.

A device to prevent or restrict the movement of a lever, a switch or a movable bridge, unless the locking member is withdrawn by an electrical device, such as an electromagnet, solenoid or motor.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.757

§ 236.758 - Lock, electric, forced drop.

An electric lock in which the locking member is mechanically forced down to the locked position.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.758

§ 236.759 - Lock, facing point.

A mechanical lock for a switch, derail, or movable-point frog, comprising a plunger stand and a plunger which engages a lock rod attached to the switch point to lock the operated unit.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.759

§ 236.760 - Locking, approach.

Electric locking effective while a train is approaching, within a specified distance, a signal displaying an aspect to proceed, and which prevents, until after the expiration of a predetermined time interval after such signal has been caused to display its most restrictive aspect, the movement of any interlocked or electrically locked switch, movable-point frog, or derail in the route governed by the signal, and which prevents an aspect to proceed from being displayed for any conflicting route.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.760

§ 236.761 - Locking, electric.

The combination of one or more electric locks and controlling circuits by means of which levers of an interlocking machine, or switches or other units operated in connection with signaling and interlocking, are secured against operation under certain conditions.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.761

§ 236.762 - Locking, indication.

Electric locking which prevents manipulation of levers that would result in an unsafe condition for a train movement if a signal, switch, or other operative unit fails to make a movement corresponding to that of its controlling lever, or which directly prevents the operation of a signal, switch, or other operative unit, in case another unit which should operate first fails to make the required movement.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.762

§ 236.763 - Locking, latch operated.

The mechanical locking of an interlocking machine which is actuated by means of the lever latch.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.763

§ 236.764 - Locking, lever operated.

The mechanical locking of an interlocking machine which is actuated by means of the lever.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.764

§ 236.765 - Locking, mechanical.

An arrangement of locking bars, dogs, tappets, cross locking and other apparatus by means of which interlocking is effected between the levers of an interlocking machine and so interconnected that their movements must succeed each other in a predetermined order.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.765

§ 236.766 - Locking, movable bridge.

The rail locks, bridge locks, bolt locks, circuit controllers, and electric locks used in providing interlocking protection at a movable bridge.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.766

§ 236.767 - Locking, route.

Electric locking, effective when a train passes a signal displaying an aspect for it to proceed, which prevents the movement of any switch, movable-point frog, or derail in advance of the train within the route entered. It may be so arranged that as a train clears a track section of the route, the locking affecting that section is released.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.767

§ 236.768 - Locking, time.

A method of locking, either mechanical or electrical, which, after a signal has been caused to display an aspect to proceed, prevents, until after the expiration of a predetermined time interval after such signal has been caused to display its most restrictive aspect, the operation of any interlocked or electrically locked switch, movable-point frog, or derail in the route governed by that signal, and which prevents an aspect to proceed from being displayed for any conflicting route.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.768

§ 236.769 - Locking, traffic.

Electric locking which prevents the manipulation of levers or other devices for changing the direction of traffic on a section of track while that section is occupied or while a signal displays an aspect for a movement to proceed into that section.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.769

§ 236.770 - Locomotive.

A self-propelled unit of equipment which can be used in train service.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.770

§ 236.771 - Machine, control.

An assemblage of manually operated devices for controlling the functions of a traffic control system; it may include a track diagram with indication lights.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.771

§ 236.772 - Machine, interlocking.

An assemblage of manually operated levers or other devices for the control of signals, switches or other units.

Cross Reference:

Magnet, track, see § 236.744.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.772

§ 236.773 - Movements, conflicting.

Movements over conflicting routes.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.773

§ 236.774 - Movement, facing.

The movement of a train over the points of a switch which face in a direction opposite to that in which the train is moving.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.774

§ 236.775 - Movement, switch-and-lock.

A device, the complete operation of which performs the three functions of unlocking, operating and locking a switch, movable-point frog or derail.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.775

§ 236.776 - Movement, trailing.

The movement of a train over the points of a switch which face in the direction in which the train is moving.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.776

§ 236.777 - Operator, control.

An employee assigned to operate the control machine of a traffic control system.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.777

§ 236.778 - Piece, driving.

A crank secured to a locking shaft by means of which horizontal movement is imparted to a longitudinal locking bar.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.778

§ 236.779 - Plate, top.

A metal plate secured to a locking bracket to prevent the cross locking from being forced out of the bracket.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.779

§ 236.780 - Plunger, facing point lock.

That part of a facing point lock which secures the lock rod to the plunger stand when the switch is locked.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.780

§ 236.781 - [Reserved]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.781

§ 236.782 - Point, controlled.

A location where signals and/or other functions of a traffic control system are controlled from the control machine.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.782

§ 236.783 - Point, stop-indication.

As applied to an automatic train stop or train control system without the use of roadway signals, a point where a signal displaying an aspect requiring a stop would be located.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.783

§ 236.784 - Position, deenergized.

The position assumed by the moving member of an electromagnetic device when the device is deprived of its operating current.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.784

§ 236.785 - Position, false restrictive.

A position of a semaphore arm that is more restrictive than it should be.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.785

§ 236.786 - Principle, closed circuit.

The principle of circuit design where a normally energized electric circuit which, on being interrupted or deenergized, will cause the controlled function to assume its most restrictive condition.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.786

§ 236.787 - Protection, cross.

An arrangement to prevent the improper operation of a signal, switch, movable-point frog, or derail as the result of a cross in electrical circuits.

Cross Reference:

Ramp, see § 236.744.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.787

§ 236.787a - Railroad.

Railroad means any form of non-highway ground transportation that runs on rails or electromagnetic guideways and any entity providing such transportation, including—

(a) Commuter or other short-haul railroad passenger service in a metropolitan or suburban area and commuter railroad service that was operated by the Consolidated Rail Corporation on January 1, 1979; and

(b) High speed ground transportation systems that connect metropolitan areas, without regard to whether those systems use new technologies not associated with traditional railroads; but does not include rapid transit operations in an urban area that are not connected to the general railroad system of transportation.

[70 FR 11095, Mar. 7, 2005]

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.787a

§ 236.788 - Receiver.

A device on a locomotive, so placed that it is in position to be influenced inductively or actuated by an automatic train stop, train control or cab signal roadway element.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.788

§ 236.789 - Relay, timing.

A relay which will not close its front contacts or open its back contacts, or both, until the expiration of a definite time intervals after the relay has been energized.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.789

§ 236.790 - Release, time.

A device used to prevent the operation of an operative unit until after the expiration of a predetermined time interval after the device has been actuated.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.790

§ 236.791 - Release, value.

The electrical value at which the movable member of an electromagnetic device will move to its deenergized portion.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.791

§ 236.792 - Reservoir, equalizing.

An air reservoir connected with and adding volume to the top portion of the equalizing piston chamber of the automatic brake valve, to provide uniform service reductions in brake pipe pressure regardless of the length of the train.

Cross Reference:

Rocker, see § 236.755.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.792

§ 236.793 - Rod, lock.

A rod, attached to the front rod or lug of a switch, movable-point frog or derail, through which a locking plunger may extend when the switch points or derail are in the normal or reverse position.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.793

§ 236.794 - Rod, up-and-down.

A rod used for connecting the semaphore arm to the operating mechanism of a signal.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.794

§ 236.795 - Route.

The course or way which is, or is to be, traveled.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.795

§ 236.796 - Routes, conflicting.

Two or more routes, opposing, converging or intersecting, over which movements cannot be made simultaneously without possibility of collision.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.796

§ 236.797 - Route, interlocked.

A route within interlocking limits.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.797

§ 236.798 - Section, dead.

A section of track, either within a track circuit or between two track circuits, the rails of which are not part of a track circuit.

AUTHORITY: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

SOURCE: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

CITE AS: 49 CFR 236.798