Question 85 Rules of the Road

The correct answer is D) flashing blue light. Coast Guard regulations stipulate that law enforcement vessels, including those operating on inland waters, are permitted to display a flashing blue light to indicate their status as an official law enforcement boat. This blue light serves to identify the vessel as a law enforcement asset and allows other boaters to recognize its authority. The other options (flashing red light, flashing amber light, blue flag) are not authorized for use by law enforcement vessels operating solely on inland waters. Red and blue lights are typically reserved for emergency vehicles, while amber lights are more commonly used for construction or hazard vehicles. A blue flag would not provide the same level of visual identification as a flashing blue light.