Metro Detroit remains among the 10 most congested places for spending time stuck in traffic, with drivers losing an average of 54 hours a year, up three hours from about a decade ago, a new study found.

Nationwide, drivers lose an average of 38 hours a year -- about 4.2 billion hours total -- inching along clogged roads and freeways, according to the Urban Mobility Report released Tuesday by the Texas Transportation Institute at Texas A&M University. The report is based on data from 2005.