Which means, as pointed out by e.g. zemvpferreira, proportionate-to-damage then either makes HGVs completely unviable or the wear component of tax for any passe

Which means, as pointed out by e.g. zemvpferreira, proportionate-to-damage then either makes HGVs completely unviable or the wear component of tax for any passenger car negligible. And HGVs really are the limiting factor on road design. We could ban SUVs maybe, we could ban cars and scooters and bicycles if various factions get their way, but if we ban HGVs - cities starve, in weeks if not days.