Keep a Space Cushion to the Back
Watch for tailgaters! If someone is following you too closely, be careful. Tap your brake lightly a few times to warn the tailgater that you are slowing down. This will flash your brake lights as a warning. Brake slowly before stopping.
Lose the tailgater as soon as you can by changing lanes. If you cannot change lanes, slow down enough to encourage the tailgater to go around you. If this does not work, pull off the road when it is safe and let the tailgater pass.