49 CFR Subpart B - Subpart B—Automatic Block Signal Systems
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Standards (§§ 236.201 - 236.207)
- § 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.