What should you do before moving into another lane?
Correct answer: B – Signal, check the mirrors and blind spot, and verify the lane is clear
Signal your intended movement and check the mirrors for surrounding traffic. Briefly look over your shoulder to check the blind spot, and verify that adequate space is available before crossing the lane line. District regulations require a driver to ascertain that a lane change can be made safely before leaving the current lane.
Source: 18 DCMR § 2201.6(a) – Driving on the Right Side of the Roadway: Proper Use of the Roadway, DC DMV Automobile Driver Manual — “Changing Lanes”




