What Is the Speed Limit on Highways in Ontario?
The standard speed limit on Ontario highways is 100 km/h, with some corridors posted at 110 km/h. Within cities and towns it is 50 km/h, and on rural roads 80 km/h. Always follow posted signs, which override default limits.
In this article
Default Speed Limits by Road Type
Ontario's Highway Traffic Act sets default speed limits that apply whenever no sign is posted.
| Road Type | Default Speed Limit |
|---|---|
| Highway (400-series and other controlled-access) | 100 km/h |
| Some designated highway corridors (e.g. Hwy 402) | 110 km/h |
| Rural roads | 80 km/h |
| Urban/city streets | 50 km/h |
| School zones (when posted) | 40 km/h or 15 km/h |
Where 110 km/h Applies
Ontario raised the limit to 110 km/h on select highway stretches as a pilot program, later made permanent on specific corridors. Affected roads are clearly posted. If you do not see a 110 km/h sign, assume 100 km/h on a controlled-access highway.
Construction Zones and Reduced Limits
Reduced speed limits in construction zones must be obeyed whether or not workers are present. Fines for speeding in an active construction zone (workers on site) are doubled. Exceeding the posted limit by 50 km/h or more anywhere in Ontario is classified as stunt driving, triggering immediate roadside consequences.
How Speeding Fines and Demerit Points Work
The penalty for speeding increases with how far over the limit you are driving.
| km/h Over Limit | Demerit Points | Notes |
|---|---|---|
| 1-15 km/h | 0 points | Fine only |
| 16-29 km/h | 3 points | Fine + demerit points |
| 30-49 km/h | 4 points | Fine + demerit points |
| 50+ km/h | 6 points | Stunt driving charge, immediate suspension |
Tips for New Drivers
G1 and G2 drivers are held to the same posted speed limits as fully licensed drivers. However, any demerit accumulation hits stricter thresholds for novice drivers: 6 points triggers a warning, and 9 points means an automatic licence suspension. Staying at or slightly below the flow of traffic is safer and reduces risk of being pulled over.
Related Questions
How Many Demerit Points Do You Get for Speeding in Ontario?
Demerit points for speeding in Ontario depend on how far over the limit you are driving: 0 points for 1-15 km/h over, 3 points for 16-29 km/h over, 4 points for 30-49 km/h over, and 6 points for 50 km/h or more over. Exceeding by 50 km/h also triggers a stunt driving charge.
Read answerWhat Is Stunt Driving in Ontario?
Stunt driving in Ontario is a serious traffic offence that includes driving 50 km/h or more over the posted speed limit, racing other vehicles, performing stunts, and several other dangerous driving behaviours. It triggers an immediate 30-day roadside licence suspension and 14-day vehicle impoundment on the spot.
Read answerHow Do You Drive Through a Construction Zone in Ontario?
In Ontario construction zones, slow down to the posted construction speed limit (which varies — common reductions on 100 km/h highways are 80 km/h, while urban roads may drop to 40 or 50 km/h), stay alert for workers and equipment, and be prepared to stop. Fines for speeding are doubled in construction zones, and if workers are present, additional minimums apply. Merge early and follow all posted signs.
Read answerWhat Is the Following Distance Rule in Ontario?
Ontario's following distance rule is the 2-second rule: leave at least 2 seconds of space between your vehicle and the one ahead under normal conditions. In rain, increase to 3-4 seconds. On ice or snow, increase to 8-10 seconds. More space means more time to react and stop.
Read answerCan You Eat While Driving in Ontario?
Eating while driving is not explicitly illegal in Ontario. However, if eating causes you to drive unsafely, you can be charged with careless driving under section 130 of the Highway Traffic Act. Ontario's distracted driving laws specifically target handheld electronic devices, not food. The best practice is to avoid eating while driving.
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