Despite its small stature, the city of Keene has emerged as a notable example of the safety and climate benefits that come with replacing traditional traffic lights with roundabouts.
By swapping out traffic signals for roundabouts, Keene has improved traffic flow, reduced congestion, and enhanced road safety for both drivers and pedestrians.
Additionally, the city has seen environmental advantages, including decreased vehicle emissions and lower fuel consumption, contributing positively to climate goals.
Keene’s experience demonstrates how even smaller cities can lead the way in creating safer, greener transportation systems through innovative infrastructure changes.
https://www.nytimes.com/2025/10/21/climate/roundabout-auto-emissions-new-hampshire.html