The law states that a driver must use a turn signal not less than 100 feet before making a turn or changing lanes. Signaling three to five seconds before any of these actions covers this requirement. Applying your brakes will signal vehicles behind you that you are planning to slow down or stop. If your vehicle’s directional lights or brake lights are not working, you must use hand signals to let other drivers know you are planning to stop or turn. Directional lights or brake lights which do not work must be fixed immediately.