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In general, slower speeds and stop conditions allow a particular load to be applied to a given pavement area for a longer period of time resulting in greater damage
Although there's nothing empirical to back this up.
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when we compare a 15 MPH bicycle against a 60 MPH Prius, that 4X speed difference means a 4X difference in road damage
I like this. It means I can hold (4 x cyclist) in similar contempt to (1 x prius twat)
Of course, neither has any right to use our thoroughfares because they don't pay road tax.
NotThamesWater
sausagefingers
@Greenbank
http://www.cyclelicio.us/2014/fourth-power-rule-road-tax/
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There’s also a speed component to the Fourth Power Rule. It’s usually not talked about because vehicles all mostly travel at the same speed, but when we compare a 15 MPH bicycle against a 60 MPH Prius, that 4X speed difference means a 4X difference in road damage.
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So, shit example aside, assuming damage to the roads is proportional to speed and inversely proportional to time then the speed at which you go over something makes no real difference as they both cancel out. If the road is perfect.
For an imperfect surfaced road it should be obvious that the impact from a bouncing wheel is going to be greater from a faster moving vehicle and the duration of such impact irrelevant.