If you are being tailgated, you should do all of the following EXCEPT

If you find yourself being tailgated, here are some things you can do to reduce the chances of a crash:
Avoid quick changes. If you have to slow down or turn, signal early, and reduce speed very gradually. Increase your following distance. Opening up room in front of you will help you to avoid having to make sudden speed or direction changes. It also makes it easier for the tailgater to get around you.
Don't speed up. It's safer to be tailgated at a low speed than a high speed.
Avoid tricks. Don't turn on your taillights or flash your brake lights. Follow the suggestions above.
[Commercial Driver’s License Manual]