Oversize and Overweight Permits in Alberta
Hauling an oversize or overweight (OSOW) load in Alberta means permits, escort vehicles, and travel rules set by Alberta Transportation and Economic Corridors – Central Permit Office. Here is what applies, and how Trusted Dispatch handles it for you.
A permit is required above these limits:
Legal limits (permit required above these)
| Dimension | Metric | Imperial |
|---|---|---|
| Width | 2.6 m | 8 ft 6 in |
| Height | 4.15 m | 13 ft 7 in |
| Length (A-train) | 25 m | 82 ft |
| Length (B-train) | 27.5 m | 90 ft 3 in |
| Length (C-train) | 25 m | 82 ft |
| Length (combination) | 23 m | 75 ft 6 in |
| Length (single unit) | 12.5 m | 41 ft |
Permits and fees
| Permit | Fee |
|---|---|
| Annual dimensional permit (oversize) | $60 CAD (~$43 USD) |
| Single-trip dimensional permit (oversize) | $15 CAD (~$11 USD) |
| Long Combination Vehicle permit (oversize) | $30 CAD (~$22 USD) |
| Overload permit (gross weight) (overweight) | $0.024 CAD per tonne per km (min $15 CAD). |
| Single-trip licence permit (over registered weight) (overweight) | $2.5 CAD per 500 kg over limit (min $15 CAD). |
USD is approximate (about 1.39 CAD to 1 USD, Aug 2026); provinces charge in Canadian dollars.
Pilot car and escort requirements
- Width 3.85-4.45 m (12 ft 8 in-14 ft 7 in) on two-lane highways: 1 escort.
- Width 3.85-5.5 m (12 ft 8 in-18 ft 1 in) on multi-lane highways: 1 escort.
- Width over 4.45 m (over 14 ft 7 in) on two-lane highways: 2 escorts.
- Width over 5.5 m (over 18 ft 1 in) on multi-lane highways: 2 escorts.
Load markings (flags, signs, lamps)
- Flag: Red or orange flags (min 40 cm) at widest extremities.
- Lamp: Flashing lights required.
- Lamp: Amber lamps forward, red lamp rear/sides at rearmost point.
- Sign: Dimensional signs (D banner 2.45 x 0.3 m, or Wide Load 1.5 x 0.3 m).
Travel restrictions
- General oversize travel from 0.5 hr before sunrise to 0.5 hr after sunset.
- Loads wider than 4.45 m travel in daylight only.
- Loads over 3.85 m may not travel after 15:00 Friday.
- Loads over 3.85 m may not travel on Sundays.
- No oversize travel on listed statutory holidays.
Oversize permits in other provinces
- Oversize and overweight permits in British Columbia
- Oversize and overweight permits in Manitoba
- Oversize and overweight permits in New Brunswick
- Oversize and overweight permits in Newfoundland and Labrador
- Oversize and overweight permits in Nova Scotia
- Oversize and overweight permits in Ontario
- Oversize and overweight permits in Prince Edward Island
- Oversize and overweight permits in Quebec
- Oversize and overweight permits in Saskatchewan
See all Canada oversize and overweight permit guides.
Move your Alberta heavy haul with Trusted Dispatch
Trusted Dispatch handles the permits, pilot cars, and routing for oversize and overweight loads across Canada. Get an instant estimate that already includes the permit and escort cost for your lane.
Rules current as of July 2026. Always confirm with Alberta Transportation and Economic Corridors – Central Permit Office before travel.