Time is money, right? All those hours you’ve spent sitting in traffic comes with a big price tag. A new report on national driving patterns shows that traffic congestion cost Hawaii $427 million in lost time and fuel in 2011.

Per person, that’s $928 per commuter traveling during peak hours (6 to 10 a.m. and 3 to 7 p.m.).

Texas A&M Transportation Institute’s annual “Urban Mobility Report,” released Tuesday, found that Americans spent 5.5 billion more hours sitting in traffic in 2011. Nationally, clogged roads cost Americans $121 billion in time and fuel. 

The 10 most congested cities are Washington, Los Angeles, San Francisco-Oakland, New York-Newark, Boston, Houston, Atlanta, Chicago, Philadelphia and Seattle.

The AP reports that the mobility report is a key tool used by experts to solve traffic problems. Wonder what our local traffic planners here in Hawaii will do with the report. Read the report’s traffic stats for Hawaii.