Slap up some rolling truck scales on your existing toll roads and pro-rate tolls with the discount maxing out right at GVWR (which you got by looking up their

Slap up some rolling truck scales on your existing toll roads and pro-rate tolls with the discount maxing out right at GVWR (which you got by looking up their vehicle with your existing ALPRs) and then spend a decade hammering out edge cases. It will never fly because the demographics that are usually supportive of that kind of legislative action are almost exactly the same demographics who buy 3-row SUVs for 2-kid households and hand wring like it's the end of the world if you put four adults in a compact car or throw plywood on a roof (but a kayak is fine).