The fact is the government spends 100’s of billions of dollars every year maintaining and building road ways and weight limitations are set primarily to limit road damage to the national highway system by over-weight vehicles.Įven though weight limits exist, they are not uniform across the United States. Weight affects the ability to maneuver the truck at highway speeds and its ability to stop. A 5 ton axle does not do 5 times as much damage to the road surface as a 1 ton axle, 5 ton axle apllies 625 times as much pressure on the road surface as a 1 ton axle.Īn argument can be made those heavier trucks pose increased safety risks on public highways. The primary reason is that the damage to the road surface does not scale linearly with the increased weight of the vehicle. There are a few reasons that trucks have weight limitations on roads and need to be properly weighed.
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