Traffic backs up on westbound Interstate 70 during the morning rush hour in Denver, Jan. 9, 2017.

David Zabulowski/AP

Nobody has fun sitting in traffic. But claims that congested highways cost drivers and businesses billions of dollars, resulting in a negative effect on a region's economy, may be overstated. CU Denver civil engineering associate professor Wes Marshall recently co-authored a study that investigated what connection, if any, traffic and economic growth have.

Marshall talked to Colorado Matters about his research, which compared historic traffic data against a region's GDP and job growth. The study found that congestion and economic markers both continued to grow with no effect on the other.