Maximum permitted wheel and axle weightsE+W+S
78.—(1) The weight transmitted to the road by one or more wheels of a vehicle as mentioned in an item in column 2 of the Table shall not exceed the maximum permitted weight specified in that item in column 3.
(2) The Parts of the Table have the following application—
(a)Part I applies to wheeled heavy motor cars, motor cars and trailers which comply with the relevant braking requirement and to wheeled agricultural motor vehicles, agricultural trailers and agricultural trailed appliances; items 1(b) and 2 also apply to buses;
(b)Part II applies to wheeled heavy motor cars, motor cars and trailers which do not fall in Part I;
(c)Part III applies to wheeled locomotives; and
(d)Part IV applies to track-laying vehicles.
PART I
(wheeled heavy motor cars, motor cars and trailers which comply with the relevant braking requirement and wheeled agricultural motor vehicles, agricultural trailers and agricultural trailed appliances; and, in respect of items 1(b) and 2, buses)
TABLE
(regulation 78(1))
| 1 | 2 | 3 |
|---|---|---|
| Item | Wheel criteria | Maximum permitted weight |
| (kg) | ||
| 1 | Two wheels in line transversely each of which is fitted with a wide tyre or with two pneumatic tyres having the centres of their areas of contact with the road not less than 300 mm apart, measured at right angles to the longitudinal axis of the vehicle— | |
| (a) if the wheels are on the sole driving axle of a motor vehicle [F1not being a bus], | 10,500 | |
| (b) if the vehicle is a bus which has 2 axles and of which the weight transmitted to the road surface by its wheels is calculated in accordance with regulation 78(5), | 10,500 | |
| (c) in any other case | 10,170 | |
| 2 | Two wheels in line transversely otherwise than as mentioned in item 1 | 9,200 |
| 3 | More than two wheels in line transversely— | |
| (a) in the case of a vehicle manufactured before 1st May 1983 [F2where] the wheels are on one axle of a group of F3... closely spaced axles F4..., | 10,170 | |
| (b) in the case of a vehicle manufactured on or after 1st May 1983, | 10,170 | |
| (c) in any other case | 11,180 | |
| 4 | One wheel not transversely in line with any other wheel— | |
| (a) if the wheel is fitted as described in item 1, | 5,090 | |
| (b) in any other case | 4,600 |
PART II
(wheeled heavy motor cars, motor cars and trailers not failing in Part I)
| 1 | 2 | 3 |
|---|---|---|
| Item | Wheel criteria | Maximum permitted weight |
| (kg) | ||
| 5 | More than two wheels transmitting weight to a strip of the road surface on which the vehicle rests contained between two parallel lines at right angles to the longitudinal axis of the vehicle— | |
| (a) less than 1.02 m apart, | 11,180 | |
| (b) 1.02 m or more apart but less than 1.22 m apart, | 16,260 | |
| (c) 1.22 m or more apart but less than 2.13 m apart | 18,300 | |
| 6 | Two wheels in line transversely | 9,200 |
| 7 | One wheel, where no other wheel is in the same line transversely. | 4,600 |
PART III
(wheeled locomotives)
| 1 | 2 | 3 |
|---|---|---|
| Item | Wheel criteria | Maximum permitted weight |
| (kg) | ||
| 8 | Two wheels in line transversely (except in the case of a road roller, or a vehicle with not more than four wheels first used before 1st June 1955) | 11,180 |
| 9 | Any two wheels in the case of a wheeled locomotive having not more than four wheels first used before 1st June 1955 (not being a road roller or an agricultural motor vehicle which is not driven at more than 20 mph) | Three quarters of the total weight of the locomotive. |
PART IV
(track-laying vehicles)
| 1 | 2 | 3 |
|---|---|---|
| Item | Wheel criteria | Maximum permitted weight |
| (kg) | ||
| 10 | The weight of a heavy motor car, motor car or trailer transmitted to any strip of the road surface on which the vehicle rests contained between two parallel lines 0.6 m apart at right angles to the longitudinal axis of the vehicle | 10,170 |
| 11 | Two wheels in line— | |
| (a) heavy motor cars or motor cars with 2 wheels, | 8,130 | |
| (b) heavy motor cars or motor cars with more than 2 wheels | 7,630 | |
| 12 | One wheel, where no other wheel is in the same line transversely, on a heavy motor car or a motor car | 4,070 |
(3) In the case of an articulated bus, or, subject to paragraph (4), of a bus first used before 1st April 1988, the laden weight, for the purposes of F5... regulation 75, and the weight transmitted to the road surface by wheels of the vehicle, for the purposes of items 1 and 2 of the Table in this regulation, shall be calculated with reference to the vehicle when it is complete and fully equipped for service with—
(a)a full supply of water, oil and fuel; and
(b)weights of 63.5 kg for each person (including crew)—
(i) for whom a seat is provided in the position in which he may be seated; and
(ii) who may by or under any enactment be carried standing, the total of such weights being reasonably distributed in the space in which such persons may be carried, save that in the case of a bus (not being an articulated bus) only the number of such persons exceeding 8 shall be taken into account.
(4) The weights for the purposes referred to in paragraph (3) may, in the case of a bus to which that paragraph applies, be calculated in accordance with paragraph (5) instead of paragraph (3).
(5) In the case of a bus first used on or after 1st April 1988, the weights for the purposes referred to in paragraph (3) shall be calculated with reference to the vehicle when it is complete and fully equipped for service with—
(a)a full supply of water, oil and fuel;
(b)a weight of 65 kg for each person (including crew)—
(i) for whom a seat is provided, in the position in which he may be seated; and
(ii) who may by or under any enactment be carried standing, the total of such weights being reasonably distributed in the space in which such persons may be so carried, save that in the case of a bus (not being an articulated bus) only the number of such persons exceeding 4 shall be taken into account;
(c)all luggage space within the vehicle but not within the passenger compartment loaded at the rate of 100 kg per m3 or 10 kg per person mentioned in sub-paragraph (b) above, whichever is the less; and
(d)any area of the roof of the vehicle constructed or adapted for the storage of luggage loaded with a uniformly distributed load at the rate of 75 kg per m2.
[F6(6) Regulation 75 shall not apply to a two axle bus if—
(a)its laden weight as calculated in accordance with paragraph (5) does not exceed 17,000kg; and
(b)the distance between the two axles is at least 3.0m.]
Textual Amendments
F1Words in reg. 78 Table Pt. 1 substituted (1.4.1988) by The Road Vehicles (Construction and Use) (Amendment) Regulations 1987 (S.I. 1987/676), regs. 1(2), 13(1)
F2Word in reg. 78 Table Item 3(a) substituted (1.1.1993) by The Road Vehicles (Construction and Use) (Amendment) (No. 4) Regulations 1992 (S.I. 1992/2016), regs. 1, 7(a)(i)
F3Word in reg. 78 Table Item 3(a) omitted (1.1.1993) by virtue of The Road Vehicles (Construction and Use) (Amendment) (No. 4) Regulations 1992 (S.I. 1992/2016), regs. 1, 7(a)(ii)
F4Words in reg. 78 Table Item 3(a) omitted (1.1.1993) by virtue of The Road Vehicles (Construction and Use) (Amendment) (No. 4) Regulations 1992 (S.I. 1992/2016), regs. 1, 7(a)(iii)
F5Words in reg. 78(3) omitted (1.1.1993) by virtue of The Road Vehicles (Construction and Use) (Amendment) (No. 4) Regulations 1992 (S.I. 1992/2016), regs. 1, 7(b)
F6Reg. 78(6) inserted (1.1.1993) by The Road Vehicles (Construction and Use) (Amendment) (No. 4) Regulations 1992 (S.I. 1992/2016), regs. 1, 7(c)
Commencement Information