Roads have been closed off after a crash this afternoon.
Police are currently at Watling Road, Radlett, after a crash today.
It is unclear how may vehicles were involved or if there were any injuries, but motorists are advised to avoid the area while emergency services work at the scene.
There are road closures in place at the junctions with Allum Lane and Loom Lane.
Butterfly Lane has also been shut off at the junction with Aldenham Road.
Hertfordshire Constabulary has been contacted for further information.
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