When changing lanes, you should: Question When changing lanes, you should: Answers Move quickly, before other vehicles can enter into the lane. Move slowly in case another vehicle is in the lane. Not use a turn signal. Avoid the right lane. Explanation Always change lanes slowly and smoothly. If there is a vehicle in the other lane that you did not see before beginning to move, they will have more time to react to your vehicle. This questions appears in the following tests: District Of Columbia Class B Knowledge Test District Of Columbia Class B Knowledge Test District Of Columbia Double Illinois Tank Oregon Passenger South Carolina Tank Tennessee Class B Knowledge Test Utah Double