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Alberta Axle Weight Limits

Maximum Legal Weight Allowed

Tractor Semi-Trailer

WEIGHT	LIMIT
Steering Axle	Maximum 6000 kg
Single Axle:
Single tires	Maximum 7300 kg
Super single tires	Maximum 7700 kg *
Dual tires	Maximum 9100 kg
Tandem Axle:
Single tires	Maximum 13,600 kg
Super single tires	Maximum 15,400 kg *
Dual tires	Maximum 17,000 kg
Tridem Axle:
Single and super single tires	Maximum 19,000 kg **
Dual tires with axle spread from 2.4 m to less than 3.0 m	Maximum 21,000 kg **
Dual tires with axle spread from 3.0 m to 3.7 m	Maximum 24,000 kg **
Gross Vehicle Weight Limits
See Weight Calculator	Cannot exceed the sum of the maximum legal axle weights and is subject to minimum interaxle spacing.

* Super single tires require “New Generation, Wide Base” tires with a minimum tire width of 445 mm. Available by permit only. Super single tires do not apply to the steering axle.

** These weights for tridem axles apply to provincial highways only. The maximum weight for a tridem axle on a municipal road is 17,000 kg. Permits may be available to achieve heavier weights.

A-Train

WEIGHT	LIMIT
Steering Axle	Maximum 6000 kg
Single Axle:
Single tires	Maximum 7300 kg
Super single tires	Maximum 7700 kg
Dual tires	Maximum 9100 kg
Tandem Axle:
Single tires	Maximum 13,600 kg
Super single tires	Maximum 15,400 kg
Dual tires	Maximum 17,000 kg
Weight Restriction 1: Combined axle weight of lead semi-trailer axle plus weight of converter dolly axle	If Dimension "A" is less than 3 metres, the combined weight is limited to a maximum of 17,000 kg for a two axle group or 23,000 kg for a three axle group.
Weight Restriction 2: Sum of axle weights of full trailer.	The weight of the second trailer must not exceed the weight of the tractor drive axle(s) plus the weight of the axle(s) on the first semitrailer.
Gross Vehicle Weight Limits
See Weight Calculator	Cannot exceed the sum of the maximum legal axle weights to a maximum of 53,500 kg.

B-Train

WEIGHT	LIMIT
Steering Axle	Maximum 6000 kg
Single Axle
Single tires	Maximum 7300 kg
Super single tires	Maximum 7700 kg *
Dual tires	Maximum 9100 kg
Tandem Axle:
Single tires	Maximum 13,600 kg
Super single tires	Maximum 15,400 kg *
Dual tires	Maximum 17,000 kg
Tridem Axle:
Single and super single tires	Maximum 19,000 kg **
Dual tires with axle spread 2.4 m to less than 3.0 m	Maximum 21,000 kg **
Dual tires with axle spread 3.0 m to 3.1 m	Maximum 24,000 kg **
Gross Vehicle Weight Limits
See weight calculator	Maximum GVW of 63,500 kg **

** The weights for tridem axles and the GVW apply to provincial highways only. The maximum weight for a tridem axle on a municipal road is 17,000 kg and the maximum GVW is 53,500 kg. Permits may be available to achieve heavier weights.

C-Train

WEIGHT	LIMIT
Steering Axle	Maximum 6000 kg
Single Axle
Single tires	Maximum 7300 kg
Super single tires	Maximum 7700 kg *
Dual tires	Maximum 9100 kg
Tandem Axle:
Single tires	Maximum 13,600 kg
Super single tires	Maximum 15,400 kg *
Dual tires	Maximum 17,000 kg
WeightRestriction 1: Combined axle weight of lead semi-trailer axle plus weight of converter dolly axle	If Dimension "A" is less than 3 metres, the combined weight is limited to a maximum of 17,000 kg for a two axle group or 23,000 kg for a three axle group.
WeightRestriction 2: Sum of axle weights of full trailer.	The weight of the second trailer must not exceed the weight of the tractor drive axle(s) plus the weight of the axle(s) on the first semitrailer.
Gross Vehicle Weight Limits
See Weight Calculator	Cannot exceed the sum of the maximum legal axle weights to a maximum of 60,500 kg. **

Truck

WEIGHT	LIMIT
Steering Axle	Maximum 7300 kg
Single Drive Axle
Single tires	Maximum 7300 kg
Super single tires	Maximum 7700 kg *
Dual tires	Maximum 9100 kg
Tandem Drive Axle:
Single tires	Maximum 13,600 kg
Super single tires	Maximum 15,400 kg *
Dual tires	Maximum 17,000 kg
Gross Vehicle Weight Limits
See Weight Calculator	Cannot exceed the sum of the maximum legal axle weights and is subject to minimum interaxle spacing.

Truck And Pony-Trailer

WEIGHT	LIMIT
Steering Axle	Maximum 7300 kg
Single Axle
Single tires	Maximum 7300 kg
Super single tires	Maximum 7700 kg *
Dual tires	Maximum 9100 kg
Tandem Axle:
Single tires	Maximum 13,600 kg
Super single tires	Maximum 15,400 kg *
Dual tires	Maximum 17,000 kg
Tridem Axle:
Single and super single tires	Maximum 19,000 kg ***
Dual tires with axle spread 2.4 m to less than 2.5 m	Maximum 21,000 kg *
Gross Vehicle Weight Limits
See Weight Calculator	Cannot exceed the sum of the maximum legal axle weights and is subject to minimum interaxle spacing.

Truck and Full Trailer

WEIGHT	LIMIT
Steering Axle	Maximum 7300 kg
Single Axle
Single tires	Maximum 7300 kg
Super single tires	Maximum 7700 kg *
Dual tires	Maximum 9100 kg
Tandem Axle:
Single tires	Maximum 13,600 kg
Super single tires	Maximum 15,400 kg *
Dual tires	Maximum 17,000 kg
Weight Restriction 1: Sum of axle weights of full trailer.	Maximum 31,000 kg
Gross Vehicle Weight Limits
See Weight Calculator	Cannot exceed the sum of the maximum legal axle weights up to a maximum of 55,300 kg**

Maximum Permit Weight Allowed

Maximum Allowable Registered Gross Vehicle Weight (GVW) – 63,500 kg

Source of information: http://www.transportation.alberta.ca/4777.htm
http://www.qp.alberta.ca/1266.cfm?page=2002_315.cfm&leg_type=Regs&isbncln=9780779734542
http://www.transportation.alberta.ca/Content/docType276/Production/Max_GVW_Chart.pdf

Alberta Axle Weight Limits

Maximum Legal Weight Allowed

Maximum Permit Weight Allowed

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