Question Tailgating is: Answers Illegal. Inconvenient, but nothing more. The fastest way to get to where you're going. The best way to let drivers know they aren't driving fast enough. Explanation Never tailgate a vehicle in front of you. Tailgating is illegal and the main cause of rear-end crashes. The fine for tailgating can be as high as $100. Take a FREE Practice Test Now This questions appears in the following tests: Massachusetts Practice Test