Police and ambulance are currently at the scene of a serious collision involving a cyclist and a motorcyclist on Thamesdown Drive at the junction with Elstree Way, North Swindon.
The road is currently closed between Thamesdown Drive between Elstree Way and Lady Lane in both directions and serious collision investigators are on scene.
The road is likely to remain closed for several hours.
Motorists are requested to avoid the area and seek an alternative route while those involved are cared for.
Why did they ever change from roundabout to trafic lights!