One-way trafficWorldwide
An introduction to the traffic rules and road signs of Worldwide. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.
For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.
22. One-way traffic
One-way traffic means that vehicles on a road or carriageway may travel only in one designated direction. The permitted direction is normally indicated by traffic signs, lane arrows or road markings.
Some road users, such as cyclists or public-transport vehicles, may be allowed to travel in the opposite direction when signs expressly permit it. A one-way road does not by itself determine the speed limit, priority or parking rules.
Wikimedia.org • Frank Vincentz • CC BY-SA
What is a one-way road?
A one-way road is a road or carriageway on which vehicles may travel only in the designated direction.
Does one-way traffic apply to the entire road?
It may apply to an entire road, one carriageway, a particular lane or only a designated section. Drivers must follow the signs and markings applying to the part of the road they use.
Road with one-way traffic.
No entry.
Does a one-way road have its own speed limit?
No. The applicable speed depends on the country, road type, surrounding area and traffic signs.
Does one-way traffic change priority at intersections?
No. Drivers must continue to follow traffic lights, priority signs and the ordinary local priority rules.
What should you do if you enter a one-way road incorrectly?
Do not continue against traffic. Stop somewhere safe without creating additional danger and follow lawful directions to leave or correct the situation. Do not reverse blindly into an intersection.

Traffic rules
Worldwide