The power of collaboration: How we can reduce traffic congestion
Google Research
Google Research modified its Google Maps routing algorithm to guide trips away from congested segments in 10 major US cities, studying how coordinated navigation interventions affect citywide traffic. The experiment redirected less than 2% of observed trips over six months, resulting in a median 2% speed increase on targeted segments and 0.5-1.0% reduction in fuel consumption. The findings demonstrate that coordinating a small fraction of trips through navigation apps can reduce congestion and emissions across entire networks, establishing a framework for system-level traffic management without requiring all drivers to participate.
Why it matters
Algorithms & Theory