[blibble]

the freight has more axles, and you could set the baseline weight by vehicle class

but maybe this would just incentivise the sort of person that buys an F150 to drive to the shops to simply to upgrade to a big rig (for the tax saving?!)

[bobbylarrybobby]

Segregating regulations by vehicle class is how the CAFE laws failed. Make your vehicle a “light truck” and now you can give it much worse mileage.

No, you just have to charge in proportion to damage done and let the economics work out how they will.