49 CFR Subpart D - Subpart D—Traffic Control Systems
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Standards (§§ 236.401 - 236.410)
- § 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.
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Rules and Instructions (§ 236.426)
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Inspection and Tests (§ 236.476)