Question The youngest a person can be to receive a motorcycle (M) endorsement is: Answers 14 years of age. 18 years of age. 21 years of age. 25 years of age. Explanation In the District of Columbia, you must be at least 18 years old to obtain a motorcycle (M) endorsement on your driver license. Take a FREE Practice Test Now This questions appears in the following tests: District Of Columbia Practice Test