A motorcyclist was thrown from his bike and dragged along a section of the A45 in Northampton after colliding with a white pick-up vehicle.
The incident happened at about 5.40pm yesterday on the eastbound carriageway, near the Barnes Meadow Interchange.
The 58-year-old man was riding a blue BMW F800 ST motorcycle which collided with a white Chevrolet pick-up driven by a 52-year-old man.
The motorcyclist sustained serious injuries in the crash.
A spokesman for Northamptonshire Police said: “The motorcycle was in collision with the back of the pick-up, causing the rider to be thrown from the motorcycle and dragged along a short section of the carriageway.”
Anyone with information can call the Drivewatch Hotline on 0800 174615.