Motor vehicle laws differ from state to state. Some states do not have a law informing drivers as to how far in advance their turn signals need to be activated. A good rule of thumb is to signal in no less than 100 feet before your turn. This is also a courtesy to other drivers, so they are aware of your next move.
You should turn on your turn signal before you need to brake for the turn.
Approximately 1 block away from the desired turn
You should use your turn signal in far enough advance so the car behind you knows you are going to turn and has enough time to slow down. However, putting the turn signal on too far in advance can be confusing because the following car will not know exactly when you are going to turn.
You should activate your turn signal at least 100 feet before making a turn in urban areas, or about 200 feet in rural areas. This gives other drivers and pedestrians enough time to anticipate your movement. Always signal well in advance to enhance safety and improve traffic flow.
200 feet before the turn according the the IL driving school test answer (1 city block)
You should signal at least 100 feet before turning in urban areas and about 200 feet in rural areas. This gives other drivers and pedestrians enough time to react to your intention. Always ensure your turn signal is activated well in advance of the actual turn to promote safety on the road.
In New Jersey, you should signal your intention to turn at least 100 feet before making the turn. This gives other drivers adequate notice of your actions. Additionally, it's important to use your turn signal continuously until you complete the turn to ensure clear communication with other road users.
Your timing is to far before top dead center you need to advance it turn the distributer foreward.
10 feet.
300 feet.
It does have a bearing. The rule in most states is 100 feet. But I recommend you use them at 200 feet if you are traveling at over 50 mph.
100 ft.