Question: The other day I came across a railroad crossing sign with the word “EXEMPT” placed on it. What is that all about?

Answer: An X-shaped sign identifies a railroad crossing. If there is more than one track, a sign below the crossbuck indicates the number of tracks.

Warning signs, pavement markings, gates and flashing red lights are positioned at most railroad crossings. Pavement markings include a stop line, an “X,” and the letters “RR” painted on the pavement in front of the crossing.

An “exempt” sign means that bus and truck drivers, who are usually required to stop at railroad crossings, may proceed without stopping. However, drivers still need to look in both directions for trains.