Heavy Vehicle (Mass, Dimension and Loading) National Regulation
sch.6-sec.9Ground clearance
Start here
Get a plain-English read of sch.6-sec.9
Turn the raw legal text into a practical explanation grounded in Heavy Vehicle (Mass, Dimension and Loading) National Regulation.
sch.6-sec.9 Ground clearance
A heavy vehicle must have a ground clearance of at least— at a point within 1m of an axle—100mm; and at the midpoint between adjacent axles—one-thirtieth of the distance between the centre-line of each axle; and 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. 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. (sch.6-sec.9-ssec.1) A heavy vehicle must have a ground clearance of at least— at a point within 1m of an axle—100mm; and at the midpoint between adjacent axles—one-thirtieth of the distance between the centre-line of each axle; and 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. (sch.6-sec.9-ssec.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.
- (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.