Regulatory, Lane & Parking Signs
You drive slower than most traffic in the left lane of a road with two lanes in your direction. What should you do when you pass this sign?
- AStay in the left lane, because you are below the speed limit.
- BSteer to the right of an island or object in the road ahead.
- CSpeed up until you match the fastest vehicles around you.
- DSignal and move to the right lane when there is a safe gap.
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Correct answer: D. Signal and move to the right lane when there is a safe gap.
Why
This sign tells drivers who are slower than the normal flow of traffic to use the right-hand lane. Check your mirrors and blind spot, signal, and move right when there is a safe gap. This keeps the left lane free for passing and cuts down on lane changes. The KEEP RIGHT EXCEPT TO PASS sign is stricter: it tells all drivers to stay right unless they are passing.
Why the other answers are not correct
- A. Wrong: the sign tells slower drivers to use the right lane, even when they drive below the speed limit.
- B. Wrong: an island or object in the road is marked by the Keep Right symbol sign; this sign tells slower drivers to use the right-hand lane.
- C. Wrong: the sign asks slower drivers to move right, not to speed up to match the fastest drivers.
Verified against Manual on Uniform Traffic Control Devices for Streets and Highways, 11th Edition with Revision 1 · Section 2B.38 KEEP RIGHT EXCEPT TO PASS Sign (R4-16), SLOWER TRAFFIC KEEP RIGHT Sign (R4-3), and TRUCKS USE RIGHT LANE Sign (R4-5) · p. 143
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