Photo: Jason Zhang, CC BY-SA 3.0, via Wikimedia Commons
Ontario road signs are grouped by shape and colour, and the G1 knowledge test has a section on them. Learn the five sign families first, then the signs that look alike, then lights and pavement markings. This study guide follows the Official MTO Driver’s Handbook chapter on traffic signs and lights.
Ontario sign shapes and colours
| Sign | Shape and colour | Meaning |
|---|---|---|
| Stop | Eight-sided, red with white letters | Come to a complete stop |
| Yield | Triangle, white with a red border | Let traffic in or near the intersection go first; stop if necessary |
| School zone | Five-sided, fluorescent yellow-green with black symbols | Slow down and watch for children |
| Railway crossing | X-shaped, white with red outline | Tracks cross the road; slow, look both ways, be ready to stop |
| Regulatory | Usually rectangular or square, white or black background | Must be obeyed |
| Warning | Usually diamond, yellow with black | Hazard or unusual condition ahead |
| Temporary condition | Usually diamond, orange with black | Road work, detours, lane closures, traffic control people |
| Information and direction | Usually rectangular, green with white | Distances, destinations, services |
| Slow-moving vehicle | Orange triangle with red border | Vehicle ahead travels at 40 km/h or less |
On regulatory signs, a green circle means you may or must do the activity shown. A red circle with a line through it means it is not allowed.
Regulatory signs that are easy to mix up
| Sign | What you may do between the signs |
|---|---|
| No stopping | Nothing. Do not stop, even for a moment. |
| No standing | Stop only to load or unload passengers. |
| No parking | Stop only to load or unload passengers or merchandise. |
Other regulatory signs to know:
- Stop for school bus when signals are flashing. A version on multi-lane highways with no centre median tells drivers in both directions to stop. See school bus stopping rules.
- School zone speed limit: a lower limit applies during school hours when the yellow lights flash.
- Community safety zone: the community has identified a special risk to pedestrians, and traffic offences inside carry increased fines.
- Pedestrian crossover: be prepared to stop and yield to pedestrians.
- Yield to bus (on the back of transit buses): yield to a bus at a bus stop once it signals to pull out.
- Lane designation signs (overhead or painted): you must travel in the direction shown for your lane.
- Reserved lanes: buses, taxis, vehicles carrying three or more people, or bicycles, all the time or at set hours. HOV signs also mark where you cannot change lanes into or out of an HOV lane.
- Two-way left-turn lane: the lane is only for left turns from either direction.
- No right turn on red, no U-turn, do not enter, do not pass, slow traffic keep right.
Warning signs worth memorizing
- Curve with a speed tab underneath: the tab shows the maximum safe speed for the curve. Ramps have their own safe-speed signs.
- Chevrons (arrowheads in groups) guide you round a sharp curve. A checkerboard border on a turn sign warns of danger.
- Intersection ahead: the arrow shows which direction has right-of-way.
- Roundabout ahead: counter-clockwise arrows show traffic direction. See Ontario intersections and roundabouts.
- Hazard marker: downward lines point to the side you may safely pass.
- Merge: two roads join, and drivers on both share responsibility for merging safely.
- Right lane ends: merge left safely.
- Hidden school bus stop, deer crossing, snowmobiles cross, fallen rock, water over road, bridge lifts or swings, pavement ends.
- Share the road: give cyclists and other vehicles safe space.
Temporary condition signs
- Construction zone: extra caution and be ready for a lower limit.
- A sign marking doubled Highway Traffic Act fines for speeding in a construction zone when workers are present.
- Traffic control person ahead; lane closed ahead; detour markers; flashing arrow boards; grooved or milled pavement (stopping may be affected).
- Do not pass a pilot or pace vehicle bearing the sign.
Information signs: one fact the test likes
Freeway interchange numbers show the distance in kilometres from where the freeway begins. Interchange 204 on Highway 401 is 204 km from Windsor. Subtract one number from another to get the distance between them.
Other signs in the handbook worth recognizing:
- Emergency Detour Route (EDR) markers guide traffic around an unplanned closure of a provincial highway.
- A long commercial vehicle (LCV) placard on the back of a truck means a double-trailer combination up to about 40 metres long. Allow extra room, because it is long and limited in speed.
- Numbers along the bottom of some information signs are emergency response markers that help emergency crews and drivers pick a route.
- Changeable message signs over freeways warn of delays, collisions and lane closures ahead.
Traffic lights in Ontario
| Signal | What to do |
|---|---|
| Green | Go, turn left or right after yielding to vehicles and pedestrians already in the intersection |
| Yellow (amber) | Stop if you safely can; otherwise go with caution |
| Red | Stop. Right turn allowed after a full stop when clear, unless a sign forbids it. Left on red allowed only from a one-way road onto a one-way road, after a full stop. |
| Flashing green, or green arrow with green light | Advance green: turn left, go straight or turn right from the proper lane; oncoming traffic has a red |
| Left green arrow with red light | Turn left from the left-turn lane; opposite left-turners may also be turning |
| Yellow arrow after a green arrow | Don’t start the turn; stop if safe |
| Flashing red | Full stop, go when safe |
| Flashing yellow | Proceed with caution |
| Blank (power failure) | Treat as an all-way stop |
| White vertical bar (transit priority) | For transit vehicles only; yield to them |
At a fully protected left turn with separate left-turn lights, you cannot start turning left once the through traffic gets its green.
Pedestrian signals
- White walking symbol: pedestrians may cross and have right-of-way.
- Orange hand, flashing or steady: pedestrians must not start crossing. Anyone already crossing still has right-of-way.
- Pedestrians may not cross on a flashing green or a left-turn green arrow unless a pedestrian signal allows it.
Pavement markings in Ontario
- Yellow lines separate opposite directions. White lines separate traffic going the same way.
- Solid line on your left: unsafe to pass. Broken line on your left: you may pass if the way is clear.
- Continuity lines (wider, closer broken lines): on your left, your lane is ending or exiting; on your right, your lane continues.
- Stop line: one white line across the road. No line? Stop at the crosswalk, then the sidewalk edge, then the intersection edge.
- Crosswalk: two parallel white lines, though intersection crosswalks are not always marked.
- White lane arrows: move only in the direction shown.
- Pedestrian crossover: double white parallel lines with an X in each approach lane, plus signs and overhead yellow lights. Stop before the line and wait until pedestrians have fully crossed the road.
- Two solid lines around an object such as a bridge pier guide you away from it, and the object has yellow and black markings.
Common questions
How many sign questions are on the G1 test?
DriveTest says the test has two or three sections, one of which is on signs, and you can check the question count with DriveTest. See the Ontario G1 knowledge test guide.
Can you turn right on a red light in Ontario?
Yes, after a complete stop and when the way is clear, unless a sign says no.
What does a five-sided sign mean?
A school zone. Slow down and watch for children.
What colour are construction signs in Ontario?
Orange with black letters or symbols, usually diamond-shaped.
What is the difference between a pedestrian crossover and a crosswalk?
A crossover is marked by specific signs, overhead yellow lights and double white lines with an X. You must stop and wait until the pedestrian has completely crossed the road.
Are Ontario signs bilingual?
In designated bilingual areas, yes. Messages may be on one sign or on an English sign followed by a French one.
Back to learning to drive in Ontario.
Sources
- Government of Ontario, “The Official MTO Driver’s Handbook: Signs” (ontario.ca)
- Government of Ontario, “The Official MTO Driver’s Handbook: Traffic lights” (ontario.ca)
- Government of Ontario, “The Official MTO Driver’s Handbook: Pedestrian signals” (ontario.ca)
- Government of Ontario, “The Official MTO Driver’s Handbook: Pavement markings” (ontario.ca)
- DriveTest, “Knowledge Tests” (drivetest.ca)





