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Alberta DOT Regulations for Oversize/Overweight Load Flags/Banners/Signs/Lights, Running Hours and Holiday Restrictions

For All State Regulations, See:

Alberta Oversize / Overweight Regulations

Running Hours and Holiday Restrictions

Daylight travel (1/2 hour before sunrise until one hour after sunset). Travel on Fridays until 3 pm for loads that exceed 3.85 meters in width (12′ 7″). Night travel is permitted on multiple lane roads for over-length loads (1 rear pilot car/escort vehicle required. For loads in excess of 42 meters (137′ 10″) long on a single lane road pilot cars are required in front and rear. Weekend travel is permitted for loads that are over length only. Loads greater than 4.45 meters (14′ 7″) in width are permitted to travel only during daylight hours. Loads more than 3.85 meters (12′ 7″) wide may not travel on Sundays. Travel is not permitted on: New Years day, Provincial day, Good Friday, Victoria day, Canada day, Family day, Labor day, Thanksgiving day, Remembrance day, Christmas day, and on Boxing day.

"Oversized Load" Banner Regulations and Requirements

A red and white "D" Banner sign on the front of the power unit and on the back of the load: Measuring 2.45 m (8 ft) by 0.3m (10 in.) high, the letter "D" in the center, 20 cm (8 in.) high, Series E.
The white portions must have good reflective quality.
The red portions must be painted with the transparent red paint used for stopsigns. Alternate "Wide Load"" Sign for oversize Loads:
Size: The panel must be 1.5 meters by 0.3 meters.
Letters: Must be black on a yellow background and the “Wide Load” letters must be 20 centimeters high, Series C.
4 The panel must have a 9.5 mm black border at the panel’s edge.

Flag Requirements

All Oversize Vehicles Daytime only, must have rectangular warning flags of red or orange color with sides that are at least 400 millimetres in length displayed on each side at the widest part of the load.

Warning Lights: Color and Placement

All Oversize Vehicles Daytime only, must have warning lights displayed on each side at the widest part of the load during darkness or during adverse weather conditions.

Source of Information:

Alberta: Commercial Vehicle Dimension and Weight Regulation

What is considered as "Oversized Load" in Alberta?

All Categories: 4.15 m (13 ft 6 in.)
All Categories: 2.6 m (8 ft 6 in.)
Length, including load, does not exceed:
Category 1: Tractor Semitrailer 23 m (75 ft)
Category 1A: Tridem Drive 23 m (77 ft)
Category 2: A-Train Double 25 m (82 ft)
Category 3: B-Train Double 27.5 m (90 ft)
Category 4: C-Train Double 25 m (82 ft)
Category 5: Straight Truck 12.5 m (41 ft)
Category 6: Truck - Pony Trailer 23 m (75 ft)
Category 7: Truck - Full Trailer 23 m (75 ft)

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