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Regulations last checked for updates: May 14, 2025
Title 49 - Transportation last revised: Mar 20, 2025
All Titles
Title 49
Chapter II
Part 236
Subpart D - Subpart D—Traffic Control Systems
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.
RULES AND INSTRUCTIONS
§ 236.426 - Interlocking rules and instructions applicable to traffic control systems.
INSPECTION AND TESTS
§ 236.476 - Interlocking inspections and tests applicable to traffic control systems.
authority:
49 U.S.C. 20102-20103
,
20107
,
20133
,
20141
,
20157
,
20301
,
20306
,
20501
,
20701
,
21301
,
21304
;
28 U.S.C. 2461
note; and
49 CFR 1.89
source:
33 FR 19684, Dec. 25, 1968, unless otherwise noted.
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