Some states do charge you for registering heavier vehicles, and there's the HVUT for the heaviest road users like trucks[0]. 0: https://www.fhwa.dot.gov/policy

Some states do charge you for registering heavier vehicles, and there's the HVUT for the heaviest road users like trucks[0]. 0: https://www.fhwa.dot.gov/policy/091116/pdfs/fhwatri-fold.pdf https://www.fhwa.dot.gov/policy/091116/pdfs/fhwatri-fold.pdf