big rig semi truck transporting oversize load on the step down semi trailer movig on the road with green trees

american automobile big business cargo carriage carrier carry carrying commercial company connection delivering delivery direction down drive driving duty eighteen equipment fleet freight going haul haulage hauler heavy highway industrial load loads local logistic logistics long lorry moving northwest oversize oversized protection reliable rig rigs road running safety semi shipping sign special step tractor traffic trailer trailers transport transportation transporter transporting travel truck trucking trucks wheeler wheels winding working