What type of lights may be found on mid-channel buoys?

Mid-channel buoys are designed to mark the middle of a waterway and guide navigators through areas such as rivers, lakes, or channels. The correct answer is that these buoys typically feature white lights. The use of white lights is a standard in navigational aids to ensure visibility and indicate the buoy's position clearly to boaters, particularly during low-light conditions.

The presence of white lights on mid-channel buoys serves a crucial function in navigation, helping to mark safe passages and assist in the avoidance of hazards. Other types of lights, like red or green, are reserved for specific purposes related to the navigation of vessels, such as indicating the side of the channel or marking safe entry or exit points. Flashing lights can also apply to certain navigational markers but are more commonly used on buoys or lights that need to signal specific information to mariners. Thus, the use of steady white lights on mid-channel buoys enhances navigational safety and clarity in the waterways.