Should Heavy Trucks drive more slowly on weak (bitumen) roads to reduce potholes in the road surface?
I am discussing with a feasibility engineer what causes more potholes. He says it is simply the 'Weight' on the road (ie of the vehicle touching the road), and I argue that it is the acceleration AND weight combined...(Perhaps the Work to be a little more exact... Something that relates to acceleration/direction, mass and time). My thoughts are, that a truck travelling fast will bounce and produce more short term weight, and also accelerating back and forth will put more pressure on the road surface - more than the truck weighs in fact, all combining to create potholes or enlarge existing potholes.
(What 'he' means by Weight Only - is that they can predict how a road will wear down simply by a factor of the Weight of the trucks that will drive on it. They do not consider the speed (limit), and I also have no real idea of how accurate they are but it seems roads wear out a little faster than they think)
Can anyone explain how I am wrong? Or why the feasibility engineer is correct? (Or please let me know if this question is not in the correct forum, for which I apologise in advance)
NB: We have forestry trucks running on our small road, which 'seems' to be tearing it up - and they drive fast! Faster than the 30 km/h recommended limit (legal limit 50...People, dogs, kids, deer, moose, bikes around). So I would like to argue that the forestry trucks should drive super slowly to preserve our precious roads, which are ostensibly for local traffic only. Not that I mind the trucks on the roads every now and then, I just want them to reduce impact. The roads are probably only 'made' for local car traffic, and the odd tractor.