The one way sign is a regulatory sign. Traffic on this road moves only in the direction of the arrow. Turn only in the direction the arrow points, and do not enter travelling the other way. It is tested in the Ontario, British Columbia, Alberta and Quebec practice banks on this site, where 10 questions ask about it, and the ones on this page carry the answer and the authority behind it.
Regulatory signs10 practice questionsTested in 4 provinces
The one way sign, drawn by us to the standard shape and colours rather than traced from any official artwork.
What it means
Traffic on this road moves only in the direction of the arrow.
What to do when you see it
Turn only in the direction the arrow points, and do not enter travelling the other way.
How to recognise a regulatory sign
Most are white with black text or a black symbol, or plain white with a red border. Two shapes are used for exactly one meaning each and nothing else: the eight sided red stop sign and the downward pointing red triangle yield sign, so you can still read them by outline alone in poor light. A red circle with a diagonal red bar always means the thing inside the circle is not allowed.
A regulatory sign states a rule you must follow. It carries the force of law behind it, not just advice, so ignoring one is a traffic offence in its own right.
10 questions in our banks show this sign and ask what it requires. Here are 6, each with the answer marked and the authority it rests on.
OntarioG1 knowledge test
You have turned onto a street where this sign is mounted at the corner. What does it tell you about the street?
Every vehicle on it travels in the direction of the arrow
A one-way street carries no oncoming traffic, so every lane on it, including the leftmost, is available to you. That also changes your turns, because a left turn here starts from the left lane instead of the centre of the road.
Highway Traffic Act (Ontario)
British ColumbiaICBC knowledge test
You want to turn onto a street where this sign is mounted with the arrow pointing to your left. What may you do?
Turn left only
The arrow shows the only direction traffic may travel on that street, so the only lawful way in is to turn the way the arrow points. Once you are on a one way street you may use whichever lane suits your next move, because there is no oncoming traffic to stay clear of.
Motor Vehicle Act (British Columbia)
AlbertaClass 7 knowledge test
What does this sign tell you about the road it faces?
Traffic on that road travels only in the direction of the arrow
A one way sign shows the only legal direction of travel on that road. Turning in against the arrow puts you head on into drivers who are watching for hazards ahead of them and have no reason to expect a vehicle coming the other way.
Alberta Driver's Guide (Government of Alberta)
QuebecSAAQ knowledge test
This sign is posted at the corner of a downtown street, where in Quebec you may also see the words SENS UNIQUE. You want to travel the other way along that street. What can you do?
Take a different street, since traffic here moves only in the direction of the arrow
SENS UNIQUE means one direction of travel, and the arrow shows which one. A quiet street changes nothing, because drivers pulling out of parking spaces and people crossing are all looking the single way traffic is meant to come from. Reversing the length of the street is the same mistake with worse visibility.
Highway Safety Code (Quebec)
OntarioG1 knowledge test
You are driving on a road marked by this sign and you want to turn left at the next intersection. Which lane should you be in?
The leftmost lane, because there is no oncoming traffic to cross
With no oncoming traffic to cross, the left lane is the natural place to turn left from and the turn becomes a simple one. Moving over early also keeps you out of the way of drivers going straight through.
Highway Traffic Act (Ontario)
British Columbia taxiClass 4 knowledge test
Your passenger points down this street and says it is the quick way to the address. The arrow points the other way.
Use another street, even if the trip gets a little longer
Traffic on that road runs only the way the arrow points, and drivers on it have no reason to expect a vehicle coming at them. Advice from the back seat is not permission. Going round costs a minute, while entering against the flow risks meeting someone at the speed of both vehicles added together.
Motor Vehicle Act (British Columbia)
The other 4 sit in the signs drills, which ask sign questions on their own with the reason for every answer.
Traffic on this road moves only in the direction of the arrow. Turn only in the direction the arrow points, and do not enter travelling the other way.
What kind of sign is the one way sign?
It is a regulatory sign. A regulatory sign states a rule you must follow. It carries the force of law behind it, not just advice, so ignoring one is a traffic offence in its own right.
Which provinces test the one way sign?
It appears in the Ontario, British Columbia, Alberta and Quebec practice banks on this site: 3 in Ontario, 2 in British Columbia, 2 in Alberta, 3 in Quebec. Every question is original prose citing Highway Traffic Act (Ontario), Motor Vehicle Act (British Columbia), Alberta Driver's Guide (Government of Alberta) and Highway Safety Code (Quebec).
Sources for this page
The meaning and the action are the standard ones taught across Canada. Each question above cites the law or the guide it rests on, and the exam facts on the province pages come from the records below.
Read through an Internet Archive copy of the SAAQ page captured on 2026-08-13, because the SAAQ turns away visitors from outside Canada. The French page is cited because it is the version the SAAQ updates first.
Read through an Internet Archive copy of the SAAQ page captured on 2026-08-13, because the SAAQ turns away visitors from outside Canada. The French page is cited because it is the version the SAAQ updates first.