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.
You should turn on your turn signal before you need to brake for the turn.
100 feet
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.
So that traffic behind you is able to anticipate your turn, and can act accordingly.
yes, you have to signal your turning actions at least 100 feet.
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.
Approximately 1 block away from the desired turn
The speedometer is electric, there is no cable. There is a speed sensor on the transmission that sends a signal to the PCM, which in turn sends a signal to the instrument cluster to display speed.
200 feet before the turn according the the IL driving school test answer (1 city block)
Some states require you to use your turn signal 200 feet in advance. Others say that 100 feet is enough.
This is a common built in feature that is used to tell the vehicle driver that one of the turn signal bulbs is out.
Reason number one - it is a law. Reason number 2 - it allows other drivers, pedestrians, and cyclists to know what your intentions are.