Not every “dump truck” legally fits on your ordinary roadway. Some are built for offroad use though they do see some pavement while being driven from jobsite to jobsite. Other offroad trucks are simply too huge to be driven on the typical road surface. The 30 ton articulated Caterpillar is an excellent workhorse of an offroad truck.
These images were taken in late December 2016 while stripping overburden (clay and black dirt) in an effort to expand the current mining areas in a couple of the pits my employer runs.