Few things are more routinely soul crushing than a traffic-filled commute, but the average U.S. driver spent 97 hours stuck behind other cars in 2018, the equivalent of two and a half workweeks, according to a new report from traffic data company INRIX.

The report looks at a city’s busiest commuting corridors and compares their commute time when traffic is lightest with their heaviest rush hour times.

One caveat: The company measured the amount of time on average drivers spend in traffic in a city’s metro area, not the average commute time. A driver who spends half an hour each day in traffic would be represented, while a driver commuting an hour without running into traffic would not.

The report finds Boston drivers spend the most time in congested commutes, with Washington, D.C.; Chicago; New York; and Los Angeles rounding out the top five.

Trevor Reed, a transportation analyst at INRIX, said the oldest cities also have the worst traffic.

“An age of a city is the best predictor as to how slow the traffic goes,” he said. “You have these cities that developed not around the automobile, and so when you mix a car with an environment not built for it, the roads perform very poorly.”

Globally, the report finds Moscow has the worst traffic, with a driver spending on average 210 hours in traffic last year.

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