Question If you plan to slow down, you can warn drivers behind you by: Answers Slamming on the brakes. Tapping the brakes a few times and before braking. Turning on one set of turn signals. Putting your hand out the driver's side window and waving. Explanation Before slowing down, it is a good idea to flash your brake lights by lightly tapping your brake pedal a few times. This will warn drivers behind you of your plans to slow down. Take a FREE Practice Test Now This questions appears in the following tests: Delaware Knowledge Test Class B , South Dakota Knowledge Test Class B , Tennessee Knowledge Test Class B , Texas Knowledge Test Class B , Wyoming Knowledge Test Class B ,