What does the presence of a flashing red light, or two red lights flashing alternately, at the approach to a level crossing or movable bridge indicate?

Question

DentroTest · Accepted Answer

According to the General Traffic Regulations (Annex I), a flashing red light or two alternately flashing red lights temporarily prohibit vehicles from passing before a level crossing, at the entrance to a movable bridge or a ferry pontoon, near an exit for fire-fighting vehicles, or when an aircraft approaches at low altitude. The prohibition is temporary: it remains in force while the lights stay on. It does not mean an interruption for an indefinite time, nor does it authorize crossing with caution.

What does the presence of a flashing red light, or two red lights flashing alternately, at the approach to a level crossing or movable bridge indicate?

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