49 CFR § 236.407
Approach or time locking; where required
November 18, 2020
Approach or time locking shall be provided for all controlled signals where route or direction of traffic can be changed.
[49 FR 3386, Jan. 26, 1984]
Approach or time locking shall be provided for all controlled signals where route or direction of traffic can be changed.
[49 FR 3386, Jan. 26, 1984]