The study is an annual report released by INRIX called the Global Traffic Scorecard. INRIX is a company devoted to aggregating huge amounts traffic and driving data. The traffic data is useful to illustrate how much cities are growing and how they are handling that growth. The report is full of interesting tidbits. For instance; at 3.4 miles per hour, Dublin is the slowest city during congestion.
INRIX found that while the United State was fourth in over all traffic, the top ten most congested cities were largely American. Los Angeles, of course, tops the list. LA commuters spend and average of 104 hours a year staring at the bumper in front of them, a little over four full 24 hour days each year. Followed by New York in third place and San Francisco in fourth. Atlanta was eighth and Miami rounded up the list in the number 10 spot. Americans on a whole spend 42 hours a year in traffic. Cities outside the US that have legendary backups include Moscow at number two and the Columbian capitol of Bogotá at number five. Thailand was found to be the most congested country overall. Thais spend an average of 61 hours a year sitting in traffic.
Too much traffic isn't just annoying for drivers; it's costly. Direct costs, such as gasoline and road maintenance, are easy to calculate. Costs such as lost productivity of employees and environmental impact, are harder to calculate. INRIX looked at the cost of traffic in the UK, Germany and the US. The US had the most expensive traffic problem, with every hour in traffic costing between $12.81 and $25.19. And the problem is getting worse. In fact, INTRIX came out with a study a few years ago which stated Americans could be wasting $2.8 trillion a year while sitting in traffic by 2030.