49 CFR Appendix B_to_part_234 - Alternate Methods of Protection Under 49 CFR 234.105(c), 234.106, and 234.107(c)

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Appendix B to Part 234 - Alternate Methods of Protection Under 49 CFR 234.105(c), 234.106, and 234.107(c)

[This is a summary - see body of text for complete requirements]

Flagger for each direction of traffic Police officer present Flagger present, but not one for each direction of traffic No flagger/no police
False Activation Normal Speed Normal Speed Proceed with caution - maximum speed of 15 mph Proceed with caution - maximum speed of 15 mph.
Partial Activation* Normal Speed Normal Speed Proceed with caution - maximum speed of 15 mph Proceed with caution - maximum speed of 15 mph.
Activation Failure** Normal Speed Normal Speed Proceed with caution - maximum speed of 15 mph Stop: Crewmember flag traffic and reboard.

*Partial activiation - full warning not given.

Non-gated crossing with one pair of lights designed to flash alternatively, one light does not work (and back-lights from other side not visible).

Gated crossing - gate arm not horizontal; or any portion of a gate arm is missing if that portion had held a gate arm flashing light.

**Activitation failure includes - if more than 50% of the flashing lights on any approach lane not functioning; or if an approach lane has two or more pairs of flashing lights, there is not at least one pair operating as intended.