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A12 and a120 route management strategy

9.3.1 Strategy Element

A12 and A120 Route Management Strategy

9.3.1 Strategy Element
Action: Investigate Accident Cluster Sites
Priority: High Ref: 1A
Initiation: Personal injury accidents (pia) are reported to the policeand logged with Essex and Suffolk County Councils. Clusters sites are definedas 3 pia in 3 years by Essex County Council and 4 pia in 3 years by SuffolkCounty Council, these being at a specific isolated location in each case.These sites are listed and forwarded to the Highways Agency and their Agentsat 3 monthly intervals.
Action description:

Accident clusters will be continuously monitored and when theprogramme allows, the following actions will be taken.

Where the cause of the problem is clear and can be resolved in the form ofminor works, eg sign or road marking changes and resurfacing, prompt actionwill be taken.

Where this is not possible a Safety Identification Study (SIS) will be carriedout to determine the cause of the accidents. This can result in low cost (up to£100k) short-term remedial measures being carried out. These works can involveTraffic Regulation Orders (eg speed limits and U-turn bans) and physical workssuch as sign and road marking changes, minor amendments to junction alignments,etc.

If a suitable short-term measure cannot be identified, the action can advanceto a Local Network Management Scheme (LNMS) involving a very detailed study lookingat various options and can result in a scheme costing up to £5m. The timescalesfor this type of work tends to be mid to long-term depending on the statutoryorders required, eg compulsory purchase of land.

If a solution cannot be found within this cost limit the LMNS study can recommenda scheme over £5m. These schemes are added to the national scheme list, knownas Targeted Programme of Improvements (TPI), which is funded from the nationalrather than the regional budget and require the support of the regional planningbody.

Objective(s) met: The main government objective these studies would help meet are thesafety objectives, principally OS1, 2 and 3. Also some economy objectives couldbe met, ie OC2 and 3 with particular schemes possibly contributing to otherobjectives.
Benefits: The main benefit would be a reduction on the number and/or severityof accidents.
Timescale: This process is currently being used and will be continuous throughthe 10 year period.