HIGHWAYS AGENCY officials have devised a contraflow system for the M20 motorway in Kent to tackle congestion caused by delayed cross-Channel ferries, according to documents released last week.
The plan involves segregating the two middle lanes of the northbound carriageway with the use of 'movable' concrete crash barriers.
Details emerged last week in a document released under the Freedom of Information Act.
The barriers would allow the carriageway to operate as a contrafl ow, with two lanes in each direction, when the southbound carriageway is used as a holding area for lorries.
This year, services have been hit by repairs to berths at the Port of Calais, industrial action and bad weather (NCE 24 March).
At present, 17km of the M20's southbound carriageway is converted into a lorry park when ferry crossings are disrupted. This is done using a coned contraflow system on the northbound carriageway.
Two lanes are used to carry traffi northbound, with just one carriage ay carrying traffic southbound.
Replacing cones with a semipermanent concrete barrier would speed the introduction of the contrafl ow and remove the need for a buffer lane between the oppo sing traffic flows.
A final report will be published later in the year.
INFOPLUS To see the document, go to www. nceplus. co. uk