Sgt. Jesse Grabow of the Minnesota State Patrol answers your questions about highway and driving rules and safety.

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

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.

An "exempt" sign means that bus and truck drivers, who are usually required to stop at railroad crossings, may proceed ...

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 ...