Is sounding the horn or siren required when traveling beneath bridges and overpasses during non-emergencies?

Sounding the horn or siren when traveling beneath bridges and overpasses during non-emergencies is not required. This practice is primarily intended for situations where there is a need to alert other vessels or individuals for safety reasons, such as in emergencies. In non-emergency situations, unnecessary noise can be disruptive and is generally discouraged.

It's important to maintain a safe and respectful environment on the water, and the use of sound signals should be reserved for situations where they are genuinely needed for safety or navigational purposes. Therefore, in typical non-emergency conditions, traveling under bridges and overpasses would not necessitate the use of a horn or siren.