"Tens of thousands of people use I-40 in Roane, Cumberland, and Putnam counties each day. The Tennessee Department of Transportation reported an average daily traffic count of 38,830 vehicles on I-40 in Cumberland County in 2018. That includes passenger cars and commercial freight trucks. The Tennessee Highway Patrol has said the truck weigh station west of Knoxville is one of the busiest weigh stations in the nation." Reference: https://crossvilleattorney.com/interstate-accidents/