When you plan to change lanes, turn, or enter or exit a highway, first give the proper turn signal. Using your turn signal, which is required by law, communicates your intended movement to drivers around you. Develop a good habit and use turn signals or hand signals even if no other traffic is on the road.
When you plan to turn, signal three or four seconds, 100 feet, ahead of your turn; drivers may pull out in front of you. Be alert. After you complete the turn or lane change, be sure the turn signal stops flashing.