Three good rules for the use of turn signals are as follows: (1) Signal early. States usually have laws on how far in advance drivers must signal a turn, but you may want to signal even earlier to keep other drivers from trying to pass you. (2) Signal continuously. Keep your hands on the steering wheel and keep the turn signal on as you start the turn. (3) Cancel the turn signal after you've turned (if it hasn't turned off by itself already).