As you drive on the expressway, make sure:

Your directional signal goes off before you change lanes.
You cut off vehicles behind you when you change lanes.
To signal all lane changes.
All of the above.
Explanation

When driving on the expressway, always signal before changing lanes and make sure the lane is clear. Give other drivers plenty of notice before merging, passing, or changing lanes. Failing to signal at high speeds can easily lead to a rear-end collision. Do not cut off other vehicles - always ensure there is enough space. After changing lanes, check that your turn signal has turned off.

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