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