Emergency services are currently at the scene of a serious collision on the A361 near Tiverton.
Police, fire and ambulance were called at 3.05pm today, 11 June, after a car left the westbound carriageway in the Halberton area
One person has sustained serious injuries.
The air ambulance is also in attendance.
The A361 westbound is closed at Sampford Peverell and is expected to remain shut for some time. Motorists are asked to find an alternative route for the time being.
Anyone who witnessed the incident is asked to contact police via firstname.lastname@example.org or by telephone on 101, quoting log number 478 of 11 June.