18 wheeler haul lorry rig semi shipping trailer transport transportation truck trucking trucks vehicle b-double highway road car cargo carrying container delivering delivery car driver freight land messenger moving pickup truck semi truck sign van wheel auto cutout isolated machine pick Pick-up pickup semi-truck travel UP wheels background big building construction earthmover haulage isolation load site white work yellow Australian blue cartage carting coils colorful colourful dangers energy hauling left-hand driving lights load hauler movement on the road power prime mover red safety semi-trailer truck shadows stripes sunlight tractor unit vehicles cabin carrier carry deck empty equipment float heavy-equipment hydraulics large length long low low-bed low-loader lowboy prime-mover semi-trailer street street-scene transporter unloaded width advice alert appropriate-behavior appropriate-behaviour black care careful caution communicate communication concern information informing large-vehicles less-noise limitations limited message noise-reduction noise-restrictions Noisy outback residential-area restricted restriction restrictions risk risks risky rural-area semi-trailers signs symbols town-boundaries trailers warning warning-sign watch watch-out words announcement be-careful beware cars cautious communicating conditions danger dangerous look-out observant road-conditions road-train signage slow-down speed speed-reduction symbol text traffic