More on KentOnline
A busy section of road was shut in both directions following an accident.
Traffic was stopped on the A21 Sevenoaks bypass from A225 (Hildenborough/ Sevenoaks) to M25 (Westerham / Sevenoaks) and drivers were advised to find alternative routes.
The incident happened at around 4pm.
KCC Highways said at 4.30pm that an air ambulance had landed at the scene.
They added: “Emergency services remain in attendance, please use alternate routes where possible and expect delays in the area.”
The road re-opened at around 6.20pm but there are still long delays.
Drivers have reported being stuck on the carriageway for over two hours.
The emergency services have been contacted for more information.