Partial activation

Partial activation means activation of a highway-rail grade crossing warning system indicating the approach of a train, however, the full intended warning is not provided due to one of the following conditions:
(1) At non-gated crossings equipped with one pair of lights designed to flash alternately, one of the two lights does not operate properly (and approaching motorists can not clearly see flashing back lights from the warning lights on the other side of the crossing);
(2) At gated crossings, the gate arm is not in a horizontal position; or
(3) At gated crossings, any portion of a gate arm is missing if that portion normally had a gate arm flashing light attached.

Source

49 CFR § 234.5


Scoping language

As used in this part:

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