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Home » Road Projects » Area 6 » A12 M25 Ipswich (A120/A12 - Harwich) » Publications » A12 and a120 route management strategy » A12 and a120 route management strategy
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A12 and a120 route management strategy

9.3.6 Strategy Element

A12 and A120 Route Management Strategy

9.3.6 Strategy Element
Action: M25/A12 Brook Street Interchange - Install Southbound Advance Direction Signing
Priority: High Ref: 3B
Initiation: There is an accident cluster site wheresouthbound traffic leaving the A12 joins the slip road to the M25 andthis location is also subject to congestion. Causes may be late lanechanges from the outside lane to the slip road, possibly due to driversnot seeing the ½mile advance direction sign (ADS) and traffic wishing toleave the A12 queuing in the outside lane.
Action description: An ADS will placed at 1 mile in advanceof the slip road and traffic leaving the A12 encouraged to use thenearside lane to help prevent mainline traffic from being obstructed.This will reduce delays to A12 through traffic and reduce tail end collisions.
Objective(s) met: The principal gains will be for economyobjectives OC2 and 3, and also safety objectives OS2 and 3.
Benefits: By reducing delay to A12 through trafficand tail end accidents, congestion and accidents will be reduced.
Timescale: The proposals are programmed for year 2of the strategy.