Advanced Flashers

At locations where the approach view of an at-grade crossing may be obstructed, the use of ground-mounted or overhead amber flashing beacons with the Grade Crossing Advanced Warning Sign (W10-1) may be considered.
When used, the flashers should operate without any actuation, i.e., always flashing. Train activated beacons are no longer recommended. As an alternative, railroad provided cantilevered flashing lights may be used in lieu of amber flashing lights.