Hello; A logging truck or timber lorry is a large truck used to carry logs. Some have integrated flatbeds, some are discrete tractor units, and some are configured to spread a load between the tractor unit and a dollied trailer pulled behind it. Often more than one trailer is attached. The most convenient trees to cut down were those near waterways for easy transportation. As the supply dwindled and loggers had to go further from water, they used teams of oxen or horses for hauling. These were superseded by steam-powered locomotives. The final development was the logging truck. The primitive trucks were improved in the 1920s and 1930s, with more powerful engines and better braking systems. The old "narrow, solid rubber-sometimes steel-treadless tires" were replaced by wider pneumatic ones with treads. Plank roads gave way to graded dirt ones. By the mid-1930s, trucks were hauling as much timber out of the Pacific Northwest as the railroads.