One Way (Left) Sign
All traffic must travel to the left
What to do
Travel only in direction of arrow. Do not enter from opposite end.
Tips
Common in downtown areas and parking structures.
Test yourself
You see this sign while driving. What do you have to do?
Show the answer
Travel only in direction of arrow. Do not enter from opposite end.
Common mistake
Turning wrong way onto one-way street
About regulatory signs
Regulatory signs are usually white rectangles with black or red markings, and they carry the force of law — speed limits, turn restrictions, right-of-way. Ignoring one is a traffic violation. The written test regularly checks whether you know exactly what a regulatory sign requires you to do.
Practice the rule this sign carries
On a three-lane one-way street, where should you position your vehicle to make a left turn?
- A. The middle lane
- B. The rightmost lane
- C. The leftmost lane
- D. Any lane is acceptable for a left turn on a one-way street
Show answer
C. The leftmost lane — To turn left on a one-way street, use the leftmost lane. After turning onto the next one-way street, you would enter the leftmost lane.
Universal rule · checked against MUTCD 11th Edition, Part 3 — Markings — Lane Use and Pavement Markings · verified 2026-08-01
When driving on a one-way street, where should you position your vehicle for a left turn?
- A. Close to the right edge of the road
- B. In the center of the road
- C. Close to the left edge of the road
- D. In the right lane
Show answer
C. Close to the left edge of the road — On a one-way street, position your vehicle close to the left edge when preparing for a left turn, since no oncoming traffic is coming from the other direction.
Universal rule · checked against NHTSA Safe Driving — Left Turns · verified 2026-05-17
Frequently asked questions
What does the One Way (Left) Sign mean?
All traffic must travel to the left
What should you do at a One Way (Left) Sign?
Travel only in direction of arrow. Do not enter from opposite end.
Reference standard: Federal Highway Administration Manual on Uniform Traffic Control Devices ↗. State and local agencies may add rules or operating times, so follow the complete posted sign where you drive. How DMV Prep sources content.
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