A good way to handle a tailgater is to:

Question

If you can do so safely, change lanes and let the tailgater pass. Speeding up may only result in them continuing to tailgate you at a higher speed, increasing the danger.

Accepted Answer

Encourage the tailgater to pass by slowing down or changing lanes.

Answer

Speed up to put distance between you and the tailgater.

Answer

Ignore the tailgater.