Home / Categories / O
CATEGORY O
Trailers
Vehicles designed and constructed to be towed by a motor vehicle — from small utility trailers to heavy semi-trailers.
O
Trailers and semi-trailers
Category O covers trailers, including semi-trailers, that are designed to be towed by a motor vehicle. It is split into four subcategories based on maximum mass.
O1Maximum mass not exceeding 0.75 tonnes — light utility trailers.
O2Maximum mass between 0.75 and 3.5 tonnes — caravans and box trailers.
O3Maximum mass between 3.5 and 10 tonnes — medium semi-trailers.
O4Maximum mass exceeding 10 tonnes — heavy semi-trailers.
Utility trailersCaravansBox trailersCurtainside semi-trailersLow-loaders
(EU) 2018/858 is the framework regulation covering the type approval of O category vehicles, along with M and N category vehicles.