Alberta speed limits and key traffic laws
Speeding is one of the most common reasons new drivers lose points, and on the road test it is an automatic fail. Alberta has default limits that apply when no sign is posted, plus special zones where the limit drops.
Remember that a speed limit is the maximum in ideal conditions. Driving too fast for the conditions is also illegal.
By the end of this topic you can
- You can state Alberta's default speed limits.
- You can apply school zone and playground zone times and speeds.
- You can stop correctly for a school bus.
- You can slow down and move over for stopped emergency and roadside vehicles.
What you need to know and understand
- Unless posted otherwise, the maximum is 50 km/h on roads in an urban area.
- Outside urban areas, the default is 80 km/h on ordinary roads and 100 km/h on provincial highways.
- Municipalities can set different limits by bylaw, so always follow posted signs.
- School and playground zones are 30 km/h unless otherwise posted, and you must not pass in them while they are in effect.
- School zones apply on school days 8:00 to 9:30 a.m., 11:30 a.m. to 1:30 p.m. and 3:00 to 4:30 p.m.
- Playground zones apply every day from 8:30 a.m. to one hour after sunset.
- Passing stopped emergency vehicles, tow trucks or roadside workers with lights flashing, slow to 60 km/h or the posted limit, whichever is lower.
School and playground zones
A school or playground sign with a speed sign attached starts a zone. A sign without a speed sign marks an area: there is no special limit, but children may be near. A zone ends at a sign showing a higher speed or an end-of-zone sign. Towns can set different times, posted under the sign.
School buses
Alternating amber lights mean the bus is about to stop: be ready to stop. When red lights flash and the stop arm is out, stop about 20 metres back and wait until the lights go off and the arm folds.
- Undivided road: traffic in both directions stops.
- Road divided by a median: only traffic behind the bus must stop; oncoming traffic proceeds with caution.
Slow down, move over
If you are in the lane next to a stopped police car, ambulance, fire truck, tow truck or maintenance vehicle with flashing lights, move to the far lane if you safely can. If not, slow to 60 km/h or the posted limit, whichever is lower. Speeding fines double when workers or stopped vehicles with flashing lights are present.
Speeding carries 2 demerit points for up to 15 km/h over, 3 for 16 to 30, 4 for 31 to 50 and 6 for 51 or more.
Common mistakes
- Slowing down inside the zone instead of before it. Be at 30 km/h as you pass the sign.
- Ignoring playground zones at weekends. They apply every day.
- Driving off when a school bus's red lights are still flashing.
- Passing a roadside vehicle with flashing lights at full highway speed.
Test yourself: Alberta speed limits and key traffic laws
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Sources: Driver's Guide: cars and light trucks, Government of Alberta, Transportation and Economic Corridors (Spring 2026 edition); School and playground zones, Government of Alberta; Roadside worker safety, Government of Alberta. Independent guide, not affiliated with any licensing agency. Always check the latest official rules with your province or territory.