Appendix: Types of heavy motor vehicles

Progress in implementing key recommendations of the 1996 Transport Committee inquiry into truck crashes.

Rigid truck

Rigid trucks account for about 58% of the total distance travelled by all heavy vehicles. These vehicles have always had a speed limit of 90km/h.

Truck-trailer

Truck-trailers account for about 21% of the total distance travelled by all heavy vehicles. Before May 2004, these vehicles had a speed limit of 80km/h. It is now 90km/h.

B-train

B-trains account for about 4.2% of the total distance travelled by all heavy vehicles. These vehicles have always had a speed limit of 90km/h.

Semi-trailer

Semi-trailers account for about 15% of the total distance travelled by all heavy vehicles. These vehicles have always had a speed limit of 90km/h.

A-train

A-trains account for about 1.2% of the total distance travelled by all heavy vehicles. Before May 2004, they had a speed limit of 80km/h. It is now 90km/h.

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