Basic meaningStop before the level crossing
The crossing may not be passed.
Light signals · Crossings and protected locations
Crossings & protection
Light signals used at level crossings, rockfall-warning sections, movable bridges, frost gates and clearance points.
Level-crossing signals
Signals 55
and 56A
Basic meaningThe crossing may be passed
The crossing protection allows passage.
Distant level-crossing signals
Signals 57
and 56B
Flashing violet refers to the level-crossing signal ahead showing stop; flashing white repeats that the crossing may be passed.
Basic meaningCrossing signal ahead shows stop
The associated level-crossing signal is showing signal 55.
Basic meaningCrossing signal ahead permits passage
The associated level-crossing signal is showing signal 56A.
Rockfall-warning signals
Signals 59
and 56C
The three fixed positions are yellow above, white in the middle and yellow below. The warning signal stands a sufficient braking distance before the striped 64C post.
Basic meaningRockfall danger
The following signal 64C post marks where the protected section begins.
Basic meaningProtected section may be passed
The rockfall-warning system allows passage through the protected section.
Other protection signals
Bridge, frost gate
and clearance point
The same flashing white light has different meanings according to the physical signal type and its location.
Signal 20C
Bridge or frost gate: stop
Two flashing red lights show stop before the movable bridge or frost gate.
Signal 56D
Bridge or frost gate: clear line
One flashing white middle light shows clear line at the protected location.
Signal 4C
Clearance-point indicator
A flashing white light in a square black unit shows that the last vehicle has not yet cleared the defined clearance point.