Answer:
According to the National Highway Traffic Safety Administration, you should use your turn signal at least 100 feet before making a turn or changing lanes. This will give other drivers enough time to react and adjust their speed or position accordingly. It is also a good idea to check your mirrors and blind spots before you turn or change lanes.
Using your turn signal is one of the most important things you can do to be a safe driver. It lets other drivers know what you are going to do, so they can react accordingly and avoid accidents.
Step-by-step explanation: