Why should you tap your brakes lightly to flash your brake lights when slowing for a hazard drivers behind you might not expect?

Pick an answer

1. It is meant only for use at night, not useful during the day, which some drivers pick up wrong about expect
2. It warns following traffic that you are slowing, which matters because trucks take longer to stop
3. It has no effect on how following drivers react
4. It is required only in construction zones

Correct!

Not quite. The correct answer is highlighted.