classic big rig day cab semi truck with oversize load sign on the roof transporting oversized cargo on two step down semi trailers

american big business cargo carrier carries chassis clean columbia commercial delivering delivery destination diesel distribution down driving eighteenwheeler fastened fifth fleet forest freight fuel gorge haul haulage hauler heavyduty highway industrial load loads logistic logistics long lorry maintain mountain moving operator oversize oversized owner pick protection rig rigs road running safety semi semitruck service shipping step tractor traffic trailer trailers transit transition transport transportation transporting travel truck trucking trucks wheel wheels white