Earlier this month the U.S. House of Representatives voted against an amendment in the newly passed highway funding bill that would allow states to decide whether or not they wanted to allow heavier trucks on America's roads. The amendment would have allowed states to decide on whether or not to increase the current limit of 80,000 pounds for cargo trucks to 91,000 pounds. The main concern with increasing cargo trucks carrying capacity centered around the safety of the trucks, even if they were equipped with a sixth axle.

Trucking companies have called for an increase in weight limit over the course of several transportation-related bills, saying that increasing the weigh limit would prevent truck drivers from having to work extra hours and boost U.S. shipping productivity. However, safety advocates argue that the weight increase would make trucks more likely to crash and called the rejection of the amendment as, "a resounding rejection of bogus arguments."

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