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

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

Though cars can drive over railroad tracks without stopping, buses of all kinds have had to stop there for over eight decades ...

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