A412 road

The A412 is a road in England between Slough and Watford. It was the main artery for this corridor and used to continue to St Albans prior to the construction of the M25. It provides interchange to the A4 in Slough, the A40/M40 at the Denham Roundabout, the M25 in Maple Cross, the A404 in Rickmansworth town centre, the A411 on a partially grade separated dual carriageway in Watford town centre, and the A41 in North Watford.

Route
Berkshire
 * Slough

Buckinghamshire
 * Iver Heath
 * Denham

Hertfordshire
 * Maple Cross
 * Rickmansworth
 * Croxley Green
 * Watford
 * North Watford
 * Garston