Signs marking railroad crossings that indicate how many sets of track there and may contain flashing lights are called _________.

Crossbuck Signs: This sign marks the crossing. It requires you to yield the right of way to the train. If there is no white line painted on the pavement, you must stop the bus before the crossbuck sign. When the road crosses over more than one set of tracks, a sign below the crossbuck indicates the number of tracks.