lorry

A lorry is a rigid or articulated motor vehicle designed to carry goods, materials, or passengers over road networks. In British and Commonwealth usage, the term covers what North Americans call trucks. The vehicle typically has a payload capacity ranging from 3.5 tonnes to over 40 tonnes, depending on chassis weight and legal axle limits. Most lorries used in construction, manufacturing, and logistics feature an open or semi-enclosed cargo bed, though box bodies, tankers, and specialist configurations are common.

The basic lorry consists of a cab mounted on a chassis with engine, gearbox, and axles, followed by a detachable or integral cargo area. Rigid lorries have payload and chassis as one unit, typical of 7.5-tonne and 18-tonne classes. Articulated lorries, or artics, use a tractor unit with a fifth-wheel coupling to haul a semi-trailer, allowing total weights of 40 tonnes or more in the UK. Engine sizes typically range from 4.0 to 16.0 litres displacement, with modern units producing 250 to 500 horsepower.

In construction and demolition work, open-bed lorries serve heavy material transport because cargo can be loaded from above using cranes or excavators, reducing handling time. The open design also sheds water and debris naturally. However, this exposes loads to weather damage and requires proper securing under UK legislation. Closed box bodies protect goods but sacrifice this operational efficiency and add weight that reduces payload.

Wear, maintenance, and common failures

Lorries operating on construction sites face accelerated wear from rough terrain, overloading, and corrosive conditions. Suspension components, brake systems, and chassis welds are high-stress points. Tyre pressures and wear demand regular inspection because underinflation increases fuel consumption and generates heat buildup. Hydraulic systems for tipper mechanisms or crane mounts require fluid checks; contaminated or degraded hydraulic oil causes actuator failure and costly repairs.

The word lorry originated in Britain around the 1880s, possibly from the railway term for a small unpowered wagon, or from the verb to lurch, reflecting the bouncy suspension of early motor lorries. The term remains standard in the UK, Ireland, Australia, and New Zealand, whereas most of continental Europe and North America use truck or similar variants. In trade documentation and safety regulations across Commonwealth countries, lorry remains the formal designation for vehicles exceeding light-van categories.