SUBPART B—Automatic Block Signal Systems (§236.201 to §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.