A hazard ahead will require you to reduce speed. How should you alert following drivers?
Correct answer: A – Tap the brake pedal lightly to flash the brake lights
A large commercial vehicle can block following drivers' view of trouble ahead. The Alabama CDL manual recommends lightly tapping the brake pedal to flash the brake lights before slowing. Four-way flashers are more appropriate when the vehicle is moving very slowly or is stopped.
Source: Alabama Commercial Driver License Manual — § 2.5.1, “Signaling Your Intentions”


