a vehicle moved by a pair of endless articulated belts, i.e. tracks (driven by sprocket wheels) which steer it by their differential speed
engin de traction dont les organes de propulsion sont composés uniquement de deux chenilles métalliques ou caoutchoutées, passant chacune autour d'un barbotin-moteur et d'une roue de tension,le poids du tracteur étant réparti sur plusieurs galets-porteurs appliquant la chenille au sol
In addition, the earth-moving machinery listed below with a capacity exceeding 15 kW must be fitted with a rollover protective structure:
- crawler loaders or wheel loaders,
- backhoe loaders,
- crawler tractors or wheel tractors,
- scrapers, self-loading or not,
- graders,
- articulated steer dumpers.
