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Legal size and weight limits

RegSenseState InfoWeights and dimensionsFleet SafetySaskatchewanBest ResultsFocus AreaFleet OperationsEnglishSize and Weight LimitsTransportation

Vehicle operations in Saskatchewan must comply with size and weight limitations. Regulations are applicable to both resident and non-resident operators.

Width:2.6 m(3.05 m for house trailers during daylight hours only)
Height:4.15 m(13 ft 6 in.)
Length:
Straight trucks12.5 m(41 ft )
Bus14 m(45 ft 11 in.)
Articulated Bus20 m(65 ft 7 in.) (or 12.5 m from the articulation point to the front or rear of the bus)
Truck-Trailer23 m(75 ft 5 in.)
Tractor-semitrailer combinations23 m(75 ft 5 in.)
Other combinations23 m(75 ft 5 in.)
A-, B-, or C-trains26 m (27.5 m for B-trains)(85 ft )
Semitrailer16.2 m(53 ft )
A, B, or C Train box length20 m(65 ft 7 in.)
Full Trailer16.2 m(box length) 53 ft
Semitrailer King Pin set back max. 2.0 m (6 ft 5 in.)
Semitrailer effective overhang max. 35% of trailer wheel base.
Trailer (other than a semitrailer) effective overhang max. 4.0 metres.
Tractor-semitrailer wheelbase is 6.2 m but may be up to 7.2 m if seimtrailer wheelbase is reduced accordingly.
If a load overhangs the rear of the vehicle by one metre or more, or overhangs either side of the vehicle by 300 mm or more, the following must be displayed at the extreme rear end(s) of the load:
  • Between sunrise and sunset, an orange or red flag of at least 300 mm square; and
  • Between sunset and sunrise, or when visibility is reduced, a lamp emitting a red light to the rear and to each side of the load that is visible for 200 m.

Also, on vehicles with overhanging loads on either side of the vehicle, an amber light visible for 200 m must be displayed on the front of the vehicle.
The following items are excluded from the dimensions of a vehicle:
  • Rearview mirrors are excluded from width if they do not extend more than 30 cm on each side of the vehicle;
  • Clearance lamps, dangerous goods placards, air or electrical connectors, anti-splash and anti-spray devices, auxiliary equipment, and load securing devices or the cover for a load is excluded from width if the devices do not increase the load-carrying capacity of the vehicle and do not extend more than 10 cm on each side of the vehicle;
  • Auxiliary equipment that is mounted on the front or rear of a truck-tractor, truck, trailer, or semitrailer is excluded from length if the equipment does not extend more than 10 cm beyond the front or rear of the vehicle;
  • Heaters or refrigeration units attached to the front of a trailer or semitrailer are not included in determining the vehicle’s length;
  • A device designed and used to improve aerodynamics of the vehicle, mounted at the rear of a truck, trailer, or semitrailer is not included in length if any portion of the device more than 1.9 m above the ground does not protrude more than 0.61 m beyond the rear of the vehicle, any portion of the device within 1.9 m of the ground does not protrude more than 0.305 m beyond the rear of the vehicle, and the device is not designed or used to increase the load-carrying capacity of the vehicle; and
  • Heavy-duty bumpers or devices designed to reduce the impact of wildlife collisions that are mounted on the front of a truck or truck-tractor are not included in the length if the bumper or device does not extend more than 30 cm beyond the front of the vehicle.
Weight:
Tire weight10 kg/mm of tire width up to 3,000 kg
Steer axle, single-steer straight trucks or buses7,300 kg (primary highways only)
Steer axle, tractor-semitrailers and A-, B-, C-trains6,000 kg
Tire weight10 kg/mm of tire width (up to a max. 3,000 kg)(Max. tire on a steering axle is 10 kg/mm of tire width, up to the steering axle weight limit maximum in Appendix A of the The Vehicle Weight and Dimension Regulations, 2010)
Super singles7,700 kg (with 445 mm or greater tires) (on highways or portions of primary highways)
Single Axle9,100 kg(8,200 kg on secondary/municipal highways)
Wide-spread Tandem Axle9,100 kg(8,200 kg on secondary/municipal highways)
Tandem axle or two adjacent axles within a tridem group17,000 kg(14,500 kg on secondary/municipal highways)
Tridem axle (other than tridem drive group)24,000 kg(spread greater than 3.6 m up to 3.7 m on primary highways)
23,000 kg(spread greater than 3.0 m up to 3.6 m on primary highways)
21,000 kg(spread greater than 2.4 m up to 3.0 m on primary highways)

Gross vehicle weights may not exceed the following:

Maximum WeightHighway
34,500 kgProv. Hwy. No. 2 from St. Louis to one km north of the South Saskatchewan River; or
The Turnor Lake Bridge located on Prov. Hwy. No. 909 southeast of the community of Turnor Lake
41,500 kgProv. Road No. 905;
Prov. Road No. 955 from the south abutment of the Douglas River Bridge to the northern most limit of Prov. Road No. 955; or
Prov. Road No. 909 from Turnor Lake to the eastern end of Prov. Road No. 909
53,500 kgProv. Hwy. No. 335 from the west abutment of the bridge over the Leather River to the south junction of Prov. Hwy. No. 23

Configuration Weights and Dimensions

No person may operate on or over a provincial highway, provincial road, or municipal highway a vehicle or combination of vehicles that exceeds the dimension or weight limits as provided in The Vehicle Weight and Dimension Regulations, 2010.

The weights and dimensions of specific configurations (truck-pony trailer, truck-full trailer, tractor-semitrailer, A-train, B-train, etc.) may be found in The Vehicle Weight and Dimension Regulations, 2010, Appendix A, available at www.publications.gov.sk.ca/freelaw/documents/English/Regulations/Regulations/H3-01R8.pdf. The appendix includes primary, secondary, and municipal highway weight and dimension limits, along with standard and winter weight season weight limits.

Lift Axles

No person may operate a vehicle equipped with a lift axle if the tires of the lift axle are in contact with the ground. This requirement does not apply if:

  • The lift axle is on a vehicle other than a semitrailer and the person has a permit authorizing the vehicle’s use;
  • The lift axle is on a semitrailer, was installed before November 1, 2010, and the control switch is located so that the driver is unable to raise and lower the axle; or
  • The lift axle is on a semitrailer and was installed on or after November 1, 2010, and the lift axle meets the following:
    • The lift axles can be raised only if the semitrailer is unladen;
    • The lift axle system is designed so that on an unladen semitrailer the lift axle system can maintain an axle in the raised position once the axle is raised;
    • The lift axle system is designed so that when the semitrailer is carrying a load all of the axles in the group are on the ground, none of the axles in the group can be raised by the lift axle, and the weight on the axle group is evenly distributed;
    • The lift axle system is designed so that whether the axles are raised or lowered, the trailer wheelbase and effective overhang meet the applicable requirements; and
    • The person has a permit authorizing the use of the lift axle system.

Highway Classification

Public highways are classified as follows:

No. 1No. 18, Manitoba Boundary to junction with Prov. Hwy. No. 39
No. 1ANo. 22, From 21.6 km east of Esterhazy to junction with Prov. Hwy. No. 9
No. 2, Assiniboia to LaRongeNo. 27
No. 3, Hudson Bay to junction with Prov. Hwy. No. 40No. 29
No. 4, Swift Current to Meadow LakeNo. 33, Kronau to Regina
No. 5, Junction with Prov. Hwy. No. 57 to SaskatoonNo. 35, Elfros to Nipawin
No. 6, from the International Boundary to MelfortNo. 37, Shaunavon to Gull Lake
No. 7No. 39
No. 8, Moosomin to RocanvilleNo. 40, Junction with Prov. Hwy. No. 3 to North Battleford
No. 9, International Boundary to Hudson BayNo. 41
No. 10No. 41A
No. 11No. 46
No. 11ANo. 47, International Boundary to Estevan
No. 12, Saskatoon to its junction with Prov. Hwy. No. 40No. 55, Junction with Prov. Hwy. No. 23 to Prince Albert, junction with Prov. Hwy. No. 3 to Meadow Lake
No. 13, Manitoba Boundary to WeyburnNo. 57
No. 14No. 80, Junction with Prov. Hwy. No. 22 to 11 km north-east of its junction with Prov. Hwy. No. 22
No. 15, Junction with Prov. Hwy. No. 11 to junction with Prov. Hwy. No. 4No. 364, east of Edenwold to Prov. Hwy. No. 10
No. 16No. 397
No. 17, Junction with Prov. Hwy. No. 14 to junction with Prov. Hwy. No. 3

Provincial highways or portions of provincial highways on which B-trains can operate at 63,500 kilograms

No. 1 No. 22, from the Esterhazy Potash Mine access to Stockholm
No. 1ANo. 29
No. 2, from Assiniboia to La RongeNo. 33 from Richardson to its junction with Provincial Highway No. 1
No. 3, from Hudson Bay to its junction with No. 40 No. 35, from its junction with No. 16 to its junction with Provincial Highway 55 at Nipawin
No. 4, from its junction with Provincial Highway No. 1 to Meadow Lake No. 39, from North Portal to its junction with Provincial Highway No. 1
No. 5, from Saskatoon to Canora No. 40, from its junction with Provincial Highway No. 3 to its junction with Provincial Highway No. 29
No. 6, from the International Boundary to Melfort No. 41, from its junction with Provincial Highway No. 5 to its junction with Provincial Highway No. 6
No. 7No. 41A, from its junction with Provincial Highway No. 41 to its junction with Provincial Highway No. 3
No. 8 from junction with Provincial Highway No. 1 to its intesection wth Grid Road no. 719.No. 46
No. 9, from its junction with Provincial Highway No. 1 to CanoraNo. 55, from its junction with Provincial Highway No. 3 to its junction with Highway No. 4
No. 9, from the International Boundary to its junction with No. 18 No. 316
No. 10 No. 397
No. 11The Belle Plaine potash mine access road from Provincial Highway No. 1 to the south-west corner of the south-east quarter of Section 14, Township 17, Range 24, West of the Second Meridian
No. 11A
No. 12, from Saskatoon to its junction with Provincial Highway No. 312The Rocanville potash mine access road from Provincial Highway No. 8 to Section 21, Township 17, Range 30 West of the First Meridian
No. 13 from the Manitoba Boundary to its junction with Provincial Highway No. 39The Cory potash mine access road from Provincial Highway No. 7 to Section 18, in Township 36, in Range 6, West of the Third Meridian
No. 14, from Saskatoon to the Alberta BoundaryThe Vanscoy potash mine access road from Provincial Highway No. 7 to Section 16, in Township 35, in Range 8, West of the Third Meridian
No. 15, from its junction with Provincial Highway No. 4 to its junction with Provincial Highway No. 11The Esterhazy potash mine access road from Provincial Highway No. 22 to Section 24, in Township 20, in Range 33, West of the First Meridian
No. 16The Lanigan potash mine access road from Provincial Highway No. 16 to Section 28, in Township 33, in Range 23, West of the Second Meridian
No. 17The Patience Lake potash mine access road from Provincial Highway No. 316 to Section 16, in Township 36, in Range 3, West of the Third Meridian
No. 18 from the Manitoba Boundary to its junction with Provincial Highway No. 39 Provincial Road 903 from its junction with Provincial Highway No. 55 to 1.52 km North

Secondary highways

Secondary highways are provincial highways or provincial roads that are not listed above.

Municipal highways

Municipal highways are public highways other than provincial highways or provincial roads.

Frost laws

For Saskatchewan’s spring weight restrictions, visit http://tinyurl.com/SKfrostlaws.

Law

Highways & Transportation Act

Regulation

The Vehicle Weight and Dimension Regulation, 2010

View agency contacts

['Size and Weight Limits']
['Weights and dimensions']
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