|Location Map ( geo)|
|Shell Filling Station, A412 looking towards the Dome Roundabout|
|Junctions related to the A412|
Had one of the alternative routes for the M25 around Watford been chosen it would have meant an upgrade for the junctions on the Watford Bypass and the Dome would have had an underpass running beneath it.
|M1, C. London, Harrow, Watford town centre|
|M1, Garston (A405)|