This sign indicates the proximity of...
A)A crossing with a tram line.
B)A crossing without priority.
C)A level crossing, movable bridge, or dock.Correct
# Explanation
This warning sign announces the proximity of a **level crossing** (railway crossing), a **movable bridge**, or a **dock/quay**. These are obstacles or special points on the road where the driver must be alert and prepared to reduce speed or stop if necessary. These zones require additional caution due to the risks associated with passing trains or the possibility that movable structures may obstruct the way.