Subjgrp 121. Rules and Instructions; Locomotives
- § 236.551 - Power supply voltage; requirement.
- § 236.552 - Insulation resistance; requirement.
- § 236.553 - Seal, where required.
- § 236.554 - Rate of pressure reduction; equalizing reservoir or brake pipe.
- § 236.555 - Repaired or rewound receiver coil.
- § 236.556 - Adjustment of relay.
- § 236.557 - Receiver; location with respect to rail.
- §§ 236.558–236.559 - §[Reserved]
- § 236.560 - Contact element, mechanical trip type; location with respect to rail.
- § 236.561 - [Reserved]
- § 236.562 - Minimum rail current required.
- § 236.563 - Delay time.
- § 236.564 - Acknowledging time.
- § 236.565 - Provision made for preventing operation of pneumatic brake-applying apparatus by double-heading cock; requirement.
- § 236.566 - Locomotive of each train operating in train stop, train control or cab signal territory; equipped.
- § 236.567 - Restrictions imposed when device fails and/or is cut out en route.
- § 236.568 - Difference between speeds authorized by roadway signal and cab signal; action required.