There is a big change for motorists in Jefferson County out near the Metropolitan Industrial Park. A new turbo roundabout has ...

The turbo roundabout opened two weeks ago and features two lanes, requiring drivers to adjust based on their intended exit.

The Washington State Department of Transportation (WSDOT) is moving forward with plans to build new roundabouts in Burien as part of its ongoing State Route 509 Completion Project, and they're holding ...

Research has shown that as the proportion of CAVs in traffic streams increases, the entry capacity of turbo roundabouts also improves, leading to reduced delays and shorter queues[2]. This ...