Oversize or overmass vehicles
Mass limits
Single axles and single axle groups (one axle or two axles with centre of axle spacing less than 1m)
Description of axle or axle group | Mass limit |
---|
Single steer axle on a motor vehicle
|
6 tonnes |
Single axle or single axle group fitted with single tyres with section width of: (a) less than 375mm
|
6 tonnes |
(b) at least 375mm but less than 450mm
|
6.7 tonnes |
(c) at least 450mm
|
7 tonnes |
Single axle or single axle group fitted with dual tyres on: (a) a pig trailer
|
8.5 tonnes |
(b) a bus licensed to carry standing passengers
|
10 tonnes |
(c) any other vehicle
|
9 tonnes |
Twin steer axle groups
Description of axle or axle group | Mass limit |
---|
Twin steer axle group without a load-sharing suspension system
|
10 tonnes |
Twin steer axle group with a load-sharing suspension system
|
11 tonnes |
Tandem axle groups (at least two axles with the centre of axle spacing at least 1m but not more than 2m)
Description of axle or axle group | Mass limit |
---|
Tandem axle group fitted with single tyres with section width of: (a) less than 375mm
|
11 tonnes |
(b) at least 375mm but less than 450mm
|
13.3 tonnes |
(c) at least 450mm
|
14 tonnes |
Tandem axle group fitted with single tyres on one axle and dual tyres on the other axle
|
13 tonnes |
Tandem axle group fitted with dual tyres on: (a) a pig trailer
|
15 tonnes |
(b) any other vehicle
|
16.5 tonnes |
Tri-axle groups (at least three axles with centre of extreme axle spacing at least 2m but not more than 3.2m)
Description of axle or axle group | Mass limit |
---|
Tri-axle group on a vehicle fitted with single tyres with section width of less than 375mm on all axles or single tyres on one or 2 axles and dual tyres on the other axle or axles
|
15 tonnes |
Tri-axle group on a pig trailer with either single tyres with section width of at least 375mm, dual tyres on all axles or a combination of those tyres
|
18 tonnes |
Tri-axle group on a vehicle, other than a pig trailer, with either single tyres with section width of at least 375mm, dual tyres, or a combination of those tyres
|
20 tonnes |
Quad axle groups (at least four axles with centre of extreme axle spacing at least 3.2m but not more than 4.9m)
Description of axle or axle group | Mass limit |
---|
Quad-axle group fitted with single tyres with section width of less than 375mm
|
15 tonnes |
Quad-axle group fitted with single tyres with section width of at least 375mm or dual tyres
|
20 tonnes |
Other axle groups
Description of axle or axle group | Mass limit |
---|
Any other axle group not specifically referred to in this schedule
|
20 tonnes |
Axle groups fitted with complying road friendly suspension – (each axle group fitted with dual tyres)
Description of axle or axle group | Mass limit |
---|
Tandem axle group
|
17 tonnes |
Tri-axle group
|
22.5 tonnes |
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