18 wheeler haul lorry rig semi shipping trailer transport transportation truck trucking trucks vehicle b-double highway road Australian blue cartage carting coils colorful colourful dangers energy hauling left-hand driving lights load hauler movement moving on the road power prime mover red safety semi-trailer truck shadows stripes sunlight tractor unit vehicles wheels yellow cabin carrier carry carrying deck empty equipment float haulage heavy-equipment hydraulics large length load long low low-bed low-loader lowboy prime-mover semi-trailer street street-scene transporter unloaded width