How far in advance must you signal before exiting a highway?

Answer: B — at least 500 feet

Signaling at least 500 feet before exiting a highway is essential for safe driving practices. This distance allows other drivers ample time to react to your intention to change lanes or exit the roadway. It helps to ensure that your actions don’t surprise or confuse other vehicles on the highway, which can prevent potential accidents. The rationale behind this requirement is to provide sufficient notice, especially on highways where vehicles are traveling at higher speeds. By signaling well in advance, you contribute to smoother traffic flow and enhance the overall safety of all road users. Proper signaling is a critical aspect of defensive driving and reflects responsible behavior as a motorist.