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Create an Effective Digital Marketing Calendar.The Importance of Knowing Your Audience.Set Meaningful Goals for Your Digital Marketing Strategy.Carriers can get creative by mixing heavier vehicles with lighter ones, but their wiggle room has shrunk as carmakers have shifted from sedans toward bulky SUVs and trucks.

But heavier cars present a challenge: Just six Cadillac Escalades (around 3 tons) could exceed an auto hauler’s legal limit. (Additional rules constrain weight per axle.) Although an empty auto hauler can alone weigh 40,000 pounds, federal regulations leave sufficient capacity to transport nine Toyota Corollas (around 1.5 tons each) or Tesla Model 3s (around 2 tons). Since the 1970s, federal law has limited the weight of heavy trucks-including auto haulers-operated on interstates to 80,000 pounds. “More mass means more energy in a crash, and it means more time to bring the vehicle to a stop,” said Kristin Poland, the deputy director of the National Transportation Safety Board’s Office of Highway Safety. in 2021, around 10 percent of all road deaths. Over 4,700 people died in heavy truck collisions in the U.S. Those extra pounds are dangerous for road safety too. (Like all heavy trucks, auto haulers pay considerable federal taxes, but critics have argued that they remain insufficient to cover the costs of pavement abuse.)

As a result, a single 80,000-pound auto hauler with five axles can cause around 4,000 times the destruction of a two-ton car. Developed after extensive federal roadway testing during the 1950s, the law is a rule of thumb showing that roadway stress caused by two vehicles is a function of their relative weight per axle scaled to the fourth power. The generalized fourth-power law explains why road damage is disproportionately inflicted by the heftiest vehicles. As you might imagine, the companies managing auto haulers (and, indeed, the entire trucking industry) prefer every load to be as full as possible in order to maximize efficiency.īut a heavier load comes with costs, particularly from highway wear and tear. Auto haulers are a subcategory of the roughly 4 million heavy trucks that ferry goods between American factories, ports, rail stations, and retailers.

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