tank semi trailer with signs for the transport of hazardous flammable liquids

american big business cargo carrier carries carry chassis commercial danger dangerous delivering delivery diesel driving eco eighteenwheeler engine equipment explosive fifth flammable fleet freight haul haulage hauler hazardous heavyduty highway industrial information liquid loads logistic logistics long lorry northwest protection pulling regulations require rig rigs road route running safety semi semitruck shipping sign tank tractor traffic trailer trailers transport transportation transporter transporting travel trees truck trucking trucks warning way wheel wheels