The A14 between M1 junction 19 at Catthorpe and junction 2 at Kelmarsh has particularly long uphill gradients. This section of road was included in a study carried out in 2002 which analysed long uphill gradients along the A14 trunk road. The study identified problems with congestion caused by overtaking HGVs at this particular location.
The two sections of the A14 between Catthorpe and Cold Ashby eastbound and between Kelmarsh and Cold Ashby westbound, are clear of junctions and it was for this reason that this particular section of the A14 was selected for the trial project.
The Highways Agency aims to reduce traffic congestion and improve safety. Through this trial, which restricts HGVs from overtaking along this busy section of the A14, it is expected that journey times will improve and the traffic will flow more smoothly.
Traffic behaviour on the A14 was monitored prior to the trial and will continue to be monitored, during and after its 18-month duration. Depending on the findings, the Agency will decide whether or not to make the restriction permanent.
There are no current plans to restrict heavy goods vehicles from overtaking on the M18.