We converted a historically unsafe two-way stop-controlled intersection into a single-lane roundabout to address a long history of crashes and near- miss events. The original configuration required drivers on the side street to stop while main-road traffic continued at speed, causing repeated misjudgments of vehicle approach rates and resulting in angle crashes. Roundabouts reduce right-angle collisions, typically the most severe crash type, by slowing all vehicles and channeling traffic unidirectionally, so entering drivers need only yield to traffic from one direction. This simplified decision environment improved both safety and operational efficiency during peak hours.
We also addressed chronic stormwater drainage deficiencies alongside the geometric redesign. Standing water had accumulated along the roadway during heavy rainfall events, increasing hydroplaning risk and accelerating pavement deterioration. Our solution incorporates upgraded pipes, inlets and swales to remove stormwater from the roadway more effectively, reducing flood potential and extending the service life of the new pavement.
Together, these two interventions, roundabout conversion and drainage system upgrades, resolve the intersection’s primary safety and infrastructure deficiencies, producing a more reliable and resilient roadway for the surrounding community.