Data tracking US heavy truck sales volumes flashing warning signs about the state of the economy. According to the U.S. Bureau of Economic Analysis, heavy truck sales, or levels where vehicle weights exceeding 14,000 pounds, have fallen to levels not seen in four years. This amount has decreased by more than 15% in August compared to a year ago and by more than 21% compared to the same month in 2023. Economists and investors believe how many of these vehicles are being sold in the US as a key indicator of the economy. This is because these trucks are considered essential to American manufacturing and buildings. If truck sales are rising, it could be a sign of an expansion of industrial behavior. Meanwhile, slide volumes can show a contraction in the US economy, historically leading to a recession. “The recent recession of mass truck sales, which began in 2023, should be a concern for policymakers,” RSM chief economist Joe Brusuelas wrote to his client in a memo describing the relationship between the collapse and the recession. The period regarding the global financial crisis of the 2000s provides a representative example of this trend. Sales fell more than 67% from the high in 2006 to mid-2009. Looking back, sales fell by about 50% as the dot-com bubble shook the national economy from its peak in late 1999 to the peak in late 2002. But the economists pointed out that it is not the perfect indicator of a recession that should always come. As artificial intelligence forms the workforce, some wonder whether the current decline in volume can instead highlight ongoing changes in the economy. “The weaknesses certainly reflect a slowdown in the manufacturing sector,” Paul Hickey, co-founder of the bespoke investment group, wrote to CNBC. But “the fact that the entire economy continues to grow is an additional signal of the evolving nature of the economy towards economics and digital activity, as opposed to manufacturing.” In other words, Hickey said it could be a sign of a “brick to click” change in the US economy. This refers to a shift in growth from the industrial role of literally bricks into the technological field linked to the internet. “Down in sales is often an indicator of a recession,” Hickey said. “The keywords are often.” Still, large truck sales have rebounded almost to the highest after the pandemic dip, thanks to the continued technological transformation of the economy. So the recent decline this year must have something to do with the state of the economy. Investors will quickly know if it’s just a slowdown or a big one.