When operating on an excepted track, what is the maximum speed allowed?

Answer: B — 10 MPH

The maximum speed allowed when operating on excepted track is 10 MPH. This speed regulation is designed to ensure safety, as excepted tracks may have deficiencies that could affect train performance and safety. These can include track conditions that do not meet the standards for fully operational tracks, often due to maintenance issues or other factors. By limiting the maximum speed to 10 MPH, the risk of derailments or other incidents is significantly reduced, allowing conductors and engineers to maintain control of the train in potentially hazardous conditions. This speed limit also provides time to respond to unexpected situations that may arise due to the less-than-ideal track conditions.