Question Why is double parking prohibited? Answers The driver is illegally avoiding parking fees. It blocks traffic and causes accidents. Your car may roll into traffic. Explanation Double parking is when a driver parks on the roadway side of another vehicle that is already parked next to a curb. Double parking a vehicle is prohibited because it blocks traffic and may cause an accident. Pass your DMV Written Test with flying colors Take me to the cheat sheet District Of Columbia This questions appears in the following tests: District Of Columbia Practice Test 18 District Of Columbia Practice Test 13