5Special-purpose vehicle (type O)

5 Special-purpose vehicle (type O)

In these regulations, special-purpose vehicle (type O) means a special-purpose vehicle (other than a special-purpose vehicle (type P)) –

(a) built, or permanently modified, primarily for use on roads; and

(b) that has at least one axle or axle group loaded in excess of the axle load limits specified in the following table:

| Column 1 | Column 2 | Column 3 | | Item No. | Type of axle or axle group | Axle load limit (tonnes) | | 1. | Single axles – | | | | (a) 2 tyres | 6.0 | | | (b) 2 wide profile tyres – | | | | (i) 375mm to 450mm | 6.7 | | | (ii) more than 450mm | 7.0 | | | (c) 4 or more tyres – | | | | (i) on pig trailers | 8.5 | | | (ii) on other vehicles | 9.0 | | 2. | Twinsteer axle groups – | | | | (a) non-load sharing suspensions | 10.0 | | | (b) load sharing suspensions | 11.0 | | 3. | Tandem axle groups – | | | | (a) 4 tyres | 11.0 | | | (b) 4 wide profile tyres – | | | | (i) 375mm to 450mm | 13.3 | | | (ii) more than 450mm | 14.0 | | | (c) 6 tyres | 13.0 | | | (d) 8 or more tyres – | | | | (i) on pig trailers | 15.0 | | | (ii) on other vehicles | 16.5 | | 4. | Tri-axle groups – | | | | (a) 6, 8 or 10 tyres | 15.0 | | | (b) 6 wide profile tyres (375mm or more) – | | | | (i) on pig trailers | 18.0 | | | (ii) on other vehicles | 20.0 | | | (c) 12 or more tyres – | | | | (i) on pig trailers | 18.0 | | | (ii) on other vehicles | 20.0 |