Newfoundland And Labrador Axle Weight Limits

Maximum Legal Weight Allowed

Axle Type	Application	Spread Range	Weight Limit
Steering Axle	Straight Truck Intercity Bus Tractor	N/A N/A N/A	8000 kg* 7250 kg* 5500 kg*
Tandem Steering Axle	Straight Truck	1.2 m to 2.2 m	16 000 kg
.      Single (other than steering axle)	Single Tires (<445 mm) Single Tires (≥ 445 mm) Dual Tires	N/A N/A N/A	6000 kg 7700 kg 9100 kg
Tandem Axle (including tandem equivalent axles)	Truck, Tractor or Trailer Dual Tires	less than 1.2 m 1.2 m to 1.85 m	9100 kg 18 000 kg
	Truck, Tractor or Trailer Single Tires (width ≥ 445 mm)	less than 1.2 m 1.2 m to 1.85 m	7700 kg 15 400 kg
Tridem Axle (including tridem equivalent axles)	Trailers Dual Tires	less than 2.4 m 2.4 m to less than 3.0 m 3.0 m to less than 3.6 m 3.6 m to 3.7 m	18 000 kg 21 000 kg 24 000 kg 26 000 kg
	Trailers Single Tires width ≥ 445 mm)	less than 2.4 m 2.4 m to less than 3.0 m 3.0 m to less than 3.6 m 3.6 m to 3.7 m	15 400 kg 21 000 kg 23 000 kg 23 100 kg
.    Triaxle Axle (model year 2003 and newer)	Trailers	3.0 m to less than 3.6 m 3.6 m to less than 4.2 m 4.2 m to 4.8 m	18 000 kg 18 000 kg 18 000 kg

*Steering axle loads can be as high as 9100 kg provided the load carrying capacity of the axles, tires, and all other components is not exceeded, and the tire loading does not exceed 10 kg per mm of tire width. However, no increase in the specified Gross Vehicle Weight for the configuration will be permitted with higher steering axle loads.

Maximum Permit Weight Allowed

A person shall not operate a vehicle, either unladen or with load, upon a highway and the vehicle shall not be registered under subsection 5(1) and (2) where

• (a) an axle weight of a vehicle exceeds 10 kilograms per millimetre of the tire manufacturer's rated tire width; or 
• (b) an axle weight for a non-steering axle exceeds 3000 kilograms per tire in respect of all tires installed on the wheels of the non-steering axle.

(2)  Notwithstanding (1)(b) a person shall not operate a vehicle either unladen or with load, upon a highway and the vehicle shall not be registered under subsection 5(1) and (2) where

• (a) an axle weight for a non-steering axle which is fitted with two single tires each of which has a width of 445 millimetres or greater exceeds 7700 kilograms for a single axle; 
• (b) an axle weight for a non-steering axle which is fitted with two single tires each of which has a width of 445 millimetres or greater exceeds 15,400 kilograms for tandem axle group; or
• (c) an axle weight for a semitrailer axle which is fitted with 2 single tires each of which has a width of 445 millimetres or greater exceeds 

                      (i)  21,000 kilograms for tridem axle groups with spread from 2.4 metres to less than 3.0 metres,

                     (ii)  23,000 kilograms for tridem axle groups with spread from 3.0 metres to less than 3.6 metres, or 

                    (iii)  23,100 kilograms for tridem axle groups with spread from 3.6 metres to 3.7 metres. 

(3) For trailers built in 2009 or earlier, the minimum track width for trailer axles fitted with two single tires each with a 445 millimetres width or greater must be no less than 2.3 metres.

(4) For trailers built in 2010 or later, the minimum track width for trailer axles fitted with 2 single tires each with a 445 millimetres width or greater must be no less than 2.45 metres.

(5) A trailer built in or after 2010 that is converted from dual to single tires must bear a label adjacent to the original compliance label that:

• (a) identifies the company, or authorized dealer of a company, under the Motor Vehicle Safety Act (Canada ) that converted the trailer; and
• (b) indicates the revised tire and wheel size designation and revised gross vehicle and axle weight ratings.

Source of information: https://www.assembly.nl.ca/Legislation/sr/regulations/rc010081Sch.pdf
https://comt.ca/english/programs/trucking/MOU%202014.pdf
https://www.servicenl.gov.nl.ca/drivers/safetycode/spcl-perm-size.html#regulations