Appendix B - 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. |
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*Partial activation—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.