I have heard that Michigan truck weight laws are the most liberal in the nation. Is this true?
Michigan permits trucks up to 164,000 pounds on the system. However, different than other states, Michigan requires a lower weight per axle which more evenly distributes the load and reduces wear and tear on roads. MDOT engineers have thoroughly studied this issue and the result of this research is that heavier trucks do not cause a disproportionate amount of damage as long as the weight is evenly distributed over an appropriate number of axles. Additionally, trucks over 80,000 pounds make up only less than 5% of all trucks operating on our roads. If Michigan were to reduce it's truck weight laws to 80,000 pounds, more damage to the system may occur because of the need to put more trucks on the road. More trucks on the road raise serious questions concerning safety and traffic congestion. Several other states are currently looking at Michigan's axle weight laws and are considering adopting similar laws.