A SMASH involving two cars on the M1 near Hemel Hempstead caused tailbacks this morning.
A blue Ford Fiesta in lane three swerved across lane four into the central reservation where it was shunted by a red Toyota Carina.
The crash happened at 8.15am between Junction 8 and 9 northbound and the road was closed for around 20 minutes.
The driver of the Fiesta suffered an eye injury and was taken to hospital.