>Last year, the average American driver wasted 38 hours sitting in traffic. While the occasional traffic jam inconveniences most drivers, some unlucky people live in the nationÂ’s most congested cities. In addition to spending an average of 42 hours a year in traffic, drivers in these cities face peak hour congestion that can increase travel time during rush hour by 15% or more. INRIX, a traffic information and services group, collects data for individual road segments. In its 2012 Traffic Scorecard, INRIX calculated the amount of time that congestion added to driversÂ’ peak hour commute for each road. After aggregating...