Highway congestion cost the U.S. trucking industry $9.2 billion in 2013 operational costs, according to an April 2014 study from The American Transportation Research Institute (ATRI). The group quantified this loss as equating to 141 million hours of lost productivity or 51,000 truckers sitting idle for a year. The data indicated the worst congestion occurs in urban areas, with the Los Angeles metropolitan area incurring the highest cost at $1.1 billion. The ATRI study demonstrates the economic costs of letting the nation’s infrastructure decay, and reinforces the need for Congress to develop a long-term solution to stabilize and grow Highway Trust Fund revenues.