Some semi trucks use single axles, while others use double or tandem axles. Here are the differences between the two setups and why they matter.
The first ten wheels belong to the tractor. It tows a semi trailer, which usually rides on two rear axles. Those axles also carry four tires each. Add those eight to the tractor’s ten, and you get 18 ...
While electric refrigeration units can play an important role in decarbonising the road transport sector, they are not ...
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