A four-axle articulated vehicle has a two-axle tractor and a two-axle semitrailer with axle spacing greater than 1.80 m. Without meeting the special conditions permitting 38 tonnes, without alternative-fuel or zero-emission mass increases and without special authorisation, what is its general maximum mass?

Correct answer

36 tonnes.

The general maximum mass is 36 tonnes. Annex IX of the General Vehicle Regulations permits 38 tonnes for this configuration when the driven axle has twin wheels and air or equivalent suspension and the 18-tonne tractor and 20-tonne semitrailer tandem limits are respected. The question excludes that case and technological mass increases. Applicable technical and axle mass limits must also be respected.