The appellant, a bus operator, was convicted in the Magistrates’ Court of contravening regulations 234 and 236 of the National Road Traffic Regulations, 2000. On 24 October 2002, while operating a bus on the N4 public road, the bus exceeded both the permissible maximum axle mass load and the permissible maximum vehicle mass. The rear axle mass was measured at 12 020 kg (exceeding the permissible 10 200 kg), and the total vehicle mass was 18 260 kg (exceeding the permissible 16 700 kg). The measurements were taken using a mass-measuring bridge and accepted as correct. The appellant argued that regulation 232 required the mass of passengers and luggage to be calculated using prescribed standard weights, and that compliance with passenger limits meant there was no contravention. He further disputed that he had the necessary mens rea.