A survey into the accident rates of articulated and rigged commercial vehicles.

It is estimated that the articulated vehicles had an accident rate of 2.6. accidents per million km. (4.2. accidents per million veh/mile) which compares with a rate of 3.0. (4.8.) for rigged commercial vehicles of over 5 tons unlade weight. Thus, despite jack-knifing and other handling problems peculiar to articulated vehicles, their overall accident rate was lightly lower than that for rigged vehicles of the same weight under the conditions prevailing in Leicestershire and Rutland. If, however, the Motorway M1 was excluded from the survey the rate for the articulated vehicles may be slightly higher than for the rigged vehicles.