Police are appealing for witnesses and information following a fatal collision on the A1m Barnet bypass.
The collision occurred on the northbound carriageway, near Borehamwood, shortly before 10pm yesterday (March 15).
For reasons unknown at this stage, a black Toyota Rav 4, left the carriageway and came to rest in a treeline next to it.
The driver, a man aged in his 40s, sustained serious injuries and sadly passed away at the scene.
PC James Thorne from the Bedfordshire, Cambridgeshire and Hertfordshire Forensic Collision Investigation Unit said: “Our thoughts are with the man’s family at this very difficult time.
“We are still working to establish the circumstances around the collision and I am appealing for anyone who witnessed the incident, or events leading up to it, to please contact us.”
Anyone with information is asked to contact PC Thorne via the non-emergency number 101, quoting ISR 779 of March 15.