Comment 99253

By Keith (anonymous) | Posted March 27, 2014 at 15:01:32

"The other overlooked aspect is that the faster the traffic is going, the more damage is done to a road."

This statement is not true at all. The axle weighting of a vehicle is the driving force behind the deterioration once there's a crack in surface and hole in the sub-bed. The faster traffic would result in higher kinetic energy which would not be impacting the road surface in any significant way, and would be more concerned with road safety issues than operations/maintenance.

Rutting can be caused by increased speed but it's most strongly correlated to traffic volumes which generally have higher speeds (so a bit of a chicken and egg game). But really, rutting doesn't increased maintenance cost since most streets usually fall under the 10 partial rebuilt/20 full rebuild life cycle except in special cases.

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