On Inland waters, power-driven vessels must exchange passing signals when they are meeting or crossing within what distance?

Power-driven vessels on inland waters are required to exchange passing signals when they are within 1/2 of a mile of each other. This distance is established to ensure safe navigation and communication between vessels, allowing them to signify their intentions to each other and avoid collisions. Engaging in these passing signals at this distance provides sufficient time for both vessels to assess the situation and take appropriate action if necessary.

The 1/2 mile distance serves as a practical measure, as it is close enough for the operators to clearly see and understand each other's signals and intentions, which is essential for maintaining safe and efficient navigation, especially in confined or congested waters. This systematic communication helps to enhance safety practices among vessels operating in proximity to one another.