(1) This section defines
"rear overhang" and
"rear overhang line" for this Regulation.
(2) The
"rear overhang" of a vehicle is the distance between the rear of the vehicle and the rear overhang line of the vehicle.
(3) For a vehicle with an axle group at the rear comprising only 1 axle, the
"rear overhang line" is a line running along the centre-line of the axle.
(4) For a vehicle with an axle group at the rear comprising 2 axles, 1 of which is fitted with twice the number of tyres as the other, the
"rear overhang line" is a line running parallel to the axles that is—(a) closer to the axle carrying the greater number of tyres than it is to the other axle; and(b) located at one-third of the distance between the 2 axles.
(5) For a vehicle with an axle group at the rear that is not an axle group mentioned in subsection (3) or (4) , the
"rear overhang line" is a line running parallel to the axles down the centre of the axle group.
(6) For the purposes of applying subsection (3) , (4) or (5) to a vehicle, if an axle group includes at least 1 steerable axle, that axle is to be disregarded unless—(a) the group comprises only 1 axle and that axle is a steerable axle; or(b) all the axles in the group are steerable axles.Examples of rear overhang line—![]()
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In this Schedule, a reference to a vehicle is taken to include a reference to the vehicle together with its load, unless otherwise stated.
(1) A heavy vehicle consisting of a combination or single vehicle must not be longer than—(a) for a combination other than a B-double, road train or a combination with 2 decks for carrying vehicles—19m; or(b) for a B-double—25m; or(c) for a road train—53.5m; or(d) for a combination, other than a road train, designed to carry vehicles on 2 or more partly or completely overlapping decks—25m; or(e) for an articulated bus—18m; or(f) for a bus other than an articulated bus—14.5m; or(g) for another single vehicle—12.5m.
(3) However, a B-double may be up to 26m long if—(a) the distance from the front articulation point of the most forward semitrailer to the rear of the B-double is not more than 20.6m; and(b) the prime mover in the B-double—(i) is fitted with a front underrun protective device complying with regulation 93 made under the UNECE Agreement or ADR 84–Front Underrun Impact Protection; and(ii) for a prime mover manufactured after 31 December 2005—is fitted with a cab complying with regulation 29 made under the UNECE Agreement; and(iii) other than for a deck permitted under subsection (3A) , does not have an area carrying, or built to carry, goods.
(3A) A prime mover in a B-double carrying, or designed to carry, vehicles may have a deck fitted over the top of the prime mover that is carrying, or built to carry, a vehicle.
(4) In this section—
"single vehicle" means a heavy motor vehicle that is not towing another vehicle.
"UNECE Agreement" means the ‘Agreement concerning the adoption of uniform technical prescriptions for wheeled vehicles, equipment and parts which can be fitted and/or be used on wheeled vehicles and the conditions for reciprocal recognition of approvals granted on the basis of these prescriptions’ done at Geneva on 20 March 1958, as amended from time to time.Note—The agreement and the regulations made under it are available on the United Nations Economic Commission for Europe’s website at.
(1) This section applies to a trailer that is, or forms part of, a heavy vehicle.
(2) On a semitrailer, dog trailer or tag trailer—(a) the distance from the front articulation point to the rear overhang line must not be more than 9.5m; and(b) the distance from the front articulation point to the rear of the trailer must not be more than 12.3m.
(3) The part of a semitrailer or tag trailer, or anything attached to a semitrailer or tag trailer, in front of the trailer’s front articulation point, other than another vehicle, must not protrude beyond the prescribed limit.
(4) For the purposes of subsection (3) ,
"prescribed limit" is an imaginary line created by drawing a semicircle of 1.9m radius from the centre of, and forward of, the front articulation point.Example—
(5) A semitrailer with more than 1 front articulation point must comply with subsections (2) and (3) when measured at one of the points.
(6) A trailer built to carry cattle, horses, pigs or sheep on 2 or more partly or completely overlapping decks must not have more than 12.5m of its length available to carry cattle, horses, pigs or sheep.
(7) In a B-double built to carry cattle, horses, pigs or sheep, the 2 semitrailers must not have more than 18.8m of their combined length available to carry cattle, horses, pigs or sheep.
(8) For subsections (6) and (7) , the length available for the carriage of cattle, horses, pigs or sheep on a trailer is measured from the inside of the front wall or door of the trailer to the inside of the rear wall or door of the trailer, with any intervening partitions disregarded.
(9) Despite subsection (2) (b) , the distance from the front articulation point to the rear of a semitrailer may be up to 13.6m if the trailer—(a) is designed and constructed for the positive control of temperature through the use of refrigerated equipment; and(b) has a distance from the front articulation point to the rear overhang line of not more than 9.9m; and(c) does not operate in a B-double or road train combination; and(d) otherwise complies dimensionally.Example—
(10) Despite subsection (2) (b) , the distance from the front articulation point to the rear of the semitrailer may be up to 13.2m if the trailer—(a) has a distance from the front articulation point to the rear overhang line of not more than 9.5m; and(b) does not operate in a B-double or road train combination; and(c) otherwise complies dimensionally.Example—
(1) The rear overhang of a heavy vehicle must not be more than the lesser of 3.7m and—(a) for a combination that includes a semitrailer, dog trailer or tag trailer—60% of the distance between the trailer’s front articulation point and its rear overhang line; or(b) for a combination that includes another trailer—the distance between the front of the trailer’s body or load carrying area and its rear overhang line; or(c) for another vehicle—60% of the distance between the centre-line of the front axle and the rear overhang line.
(2) A semitrailer or tag trailer with more than 1 front articulation point must comply with subsection (1) (a) when measured at the same point that is used for measurement for compliance under section 4 (4) .
(3) Despite subsection (1) , if a vehicle built to carry vehicles (the
"primary vehicle" ) has at least 2 decks and a vehicle it is carrying overhangs its rear, the rear overhang of the primary vehicle must not be more than 4.9m.
(1) This section applies to a trailer that is, or forms part of, a heavy vehicle.
(2) On a dog trailer, the distance between the coupling pivot point on the drawbar and the centre of the front axle group—(a) must not be more than 5m; and(b) if the trailer is used in a road train that is longer than 19m—must not be less than 3m.Example—
(3) On a trailer, other than a semitrailer or tag trailer, with only 1 axle group, the distance between the coupling pivot point on the drawbar and the centre of the axle group must not be more than 8.5m.
For this Regulation, a front blind spot mirror, fitted to a heavy vehicle in accordance with section 13A of Schedule 2 to the Heavy Vehicle (Vehicle Standards) National Regulation , is to be disregarded for the purpose of measuring the length of the heavy vehicle unless the mirror projects more than 150mm beyond the overall length of the heavy vehicle.
For this Regulation, an indirect vision device fitted to a heavy vehicle is to be disregarded for the purposes of measuring the length of the heavy vehicle under section 3 or 4 —
(a) if the device is fitted to the heavy vehicle under section 13C (a) of Schedule 2 of the Heavy Vehicle (Vehicle Standards) National Regulation ; or
(b) for a device fitted to the heavy vehicle under section 13C (b) of Schedule 2 of the Heavy Vehicle (Vehicle Standards) National Regulation —unless the device projects more than 150mm beyond the overall length of the heavy vehicle.
(1) For this Regulation, each of the following devices is to be disregarded for the purposes of measuring the length of a heavy vehicle if the device is fitted to the front end of the heavy vehicle—(a) a prescribed device for indirect vision;(b) a cross-view mirror, or any other device enabling the driver of the heavy vehicle to see objects in an area adjacent to the heavy vehicle, if the device does not protrude more than 250mm from the front end of the heavy vehicle;(c) a monitoring device that—(i) is fitted as part of an automated driving system or a close-proximity information system; and(ii) does not protrude more than 250mm from the front end of the heavy vehicle.
(2) In this section—
"automated driving system" ,
"close-proximity information system" ,
"cross-view mirror" and
"prescribed device for indirect vision" have the same meanings as in section 8 of the Heavy Vehicle (Vehicle Standards) National Regulation .
"front end" means front end within the meaning of the ADR (Definitions and Vehicle Categories).
(1) A heavy vehicle must not be wider than 2.5m, unless it is—(a) a safer freight vehicle; or(b) a combination that includes a safer freight vehicle, together with its load, that is the only component vehicle wider than 2.5m.
(2) For this Regulation, the width of a heavy vehicle must be measured in accordance with section 8 of the Heavy Vehicle (Vehicle Standards) National Regulation .
(1) A heavy vehicle must not be higher than—(a) for a vehicle built to carry cattle, horses, pigs or sheep—4.6m; or(b) for a vehicle built with at least 2 decks for carrying vehicles—4.6m; orNote—An example is included under section 12 (2) .(ba) for a specified semitrailer—4.6m; or(c) for a double-decker bus—4.4m; or(d) for another vehicle—4.3m.
(2) In this section—
"specified semitrailer" has the same meaning as it has in section 153A (2) of the Law.
(1) A heavy vehicle must have a ground clearance of at least—(a) at a point within 1m of an axle—100mm; and(b) at the midpoint between adjacent axles—one-thirtieth of the distance between the centre-line of each axle; and(c) at any other point—the distance that allows the vehicle to pass over a peak in the road if the gradient on either side of the peak is 1:15.Example—
(2) In this section—
"ground clearance" , of a vehicle, means the minimum distance between the ground and the vehicle’s underside, other than its tyres, wheels, wheel hubs, brake backing plates, flexible mudguards and mudflaps.
The axle groups in a heavy combination that is a B-double with 2 tri-axle groups must be positioned so that the following formulae are complied with—
where—Example—
In this Part—
"load" includes equipment and the pole of a pole-type trailer or jinker.
(1) The distance measured at right angles between the rear overhang line of a vehicle and the rear of any load it is carrying must not exceed the rear overhang that the vehicle is permitted under section 5 .Example—
(2) Despite subsection (1) , the distance measured at right angles between the rear overhang line of a trailer carrying vehicles on more than one deck and the rear of the rearmost vehicle on the trailer must not exceed 4.9m.Example of maximum permitted dimensions of a loaded car carrier—
Note—The combined dimensions of a vehicle and its load must still meet the requirements of section 13 even if the load projects from the vehicle in any direction.
A load on a heavy vehicle must not project—
(a) for a heavy vehicle consisting of only a motor vehicle—(i) more than 1.2m in front of the motor vehicle’s headlights; or(ii) more than 150mm past the outer extremity of the motor vehicle on either side; or
(b) for a heavy vehicle consisting of a motor vehicle and 1 or more trailers—(i) more than 1.2m in front of the motor vehicle’s headlights; or(ii) more than 150mm past the outer extremity on either the motor vehicle or the trailers on either side.
Example of maximum side projection of load—
Notes—1 The combined dimensions of a vehicle and its load must still meet the requirements of this section even if the load projects from the vehicle in any direction.2 The example under section 12 (1) shows the front projection limit.