When both auxiliary lights fail after a train departs, what is the maximum speed allowed over crossings?

When both auxiliary lights fail after a train departs, the maximum speed allowed over crossings is 20 mph. This rule is in place to ensure safety at grade crossings. Auxiliary lights are designed to alert traffic and pedestrians of an approaching train; when they fail, it's vital to reduce the speed to minimize the risk of accidents.

By limiting the speed to 20 mph in such situations, operators are provided with ample time and control to react to any unforeseen obstacles or signals that may require immediate attention. This is a precautionary measure to enhance safety both for the crew operating the train and for individuals near the crossing. The emphasis on a reduced speed ensures that trains can stop if necessary and that the risk of collisions is mitigated.