Traffic congestion in California has been a long standing issue within the state.  A common suggestion to help ease traffic is widening the roads on the freeways by adding more lanes.  Susan L Handy, Department Vice Chair and Professor, discusses why this is not an optimal solution and offers other viable solutions from her, Shifting Gears: Toward a New Way of Thinking about Transportation (The MIT Press, 2023).

Read the news story: 

https://magazine.ucdavis.edu/does-widening-highways-ease-traffic-congestion/