> Road wear increases with the fourth power of axle weight iirc
That's not actually true, and the paper that describes the "fourth power" thing even says that right up front.
If you massively oversimplify the model so that you've got all vehicles fitted with infinitely hard bicycle tyres on a perfectly smooth surface, it kind of works out, but not quite.
Interesting! Nevertheless I believe it is true that bike and pedestrian paths are much cheaper to construct and maintain than roads for cars and trucks.
Most roads are not used for delivering goods, so if we'd just reduce private car use that would already be a great improvement. If you want to go even further, rail has a lot of potential left.
That's not actually true, and the paper that describes the "fourth power" thing even says that right up front.
If you massively oversimplify the model so that you've got all vehicles fitted with infinitely hard bicycle tyres on a perfectly smooth surface, it kind of works out, but not quite.