About Special lights: tram/bus, level crossing, bridge and lane: which statement is correct?
A red cross above a lane means you may still use that lane when it is busy and the other lanes are jammed.
Flashing green in fact means crossing is still allowed; it only warns that the red light will appear soon.
At a level crossing, a white flashing light means there is danger and you must stop.
Tram/bus lights apply only to trams and scheduled buses; other vehicles may ignore them.
Explanation
trap: flashing as a stop signal. Flashing green in fact means crossing is still allowed; it only warns that the red light will appear soon. Only red means you may no longer start