Subjgrp 116. Standards
- § 236.401 - Automatic block signal system and interlocking standards applicable to traffic control systems.
- § 236.402 - Signals controlled by track circuits and control operator.
- § 236.403 - Signals at controlled point.
- § 236.404 - Signals at adjacent control points.
- § 236.405 - Track signaled for movements in both directions, change of direction of traffic.
- § 236.406 - [Reserved]
- § 236.407 - Approach or time locking; where required.
- § 236.408 - Route locking.
- § 236.409 - [Reserved]
- § 236.410 - Locking, hand-operated switch; requirements.