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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 B - Subpart B—Automatic Block Signal Systems
STANDARDS
§ 236.201 - Track-circuit control of signals.
§ 236.202 - Signal governing movements over hand-operated switch.
§ 236.203 - Hand operated crossover between main tracks; protection.
§ 236.204 - Track signaled for movements in both directions, requirements.
§ 236.205 - Signal control circuits; requirements.
§ 236.206 - Battery or power supply with respect to relay; location.
§ 236.207 - Electric lock on hand-operated switch; control.
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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