Traffic
A modest estimate of commercial vehicles using the development is 3000 vehicles per day. Access is proposed by a turn off the A508. For vehicles turning right into the site there will be a central lane capable of holding five lorries. There have been fatalities turning on and off the A508.
Heading from the A5, the proposed junction will be before the Dogsmouth Brook at Cosgrove: this is only 300m from the roundabout and, at times, will cause tailbacks to the already congested junction.
In the Local Plan, WNC stipulated a roundabout access to the development. In order to fit in the enormous Unit 1, the developers have moved the access point further away from the A5 Old Stratford roundabout and changed it to a T junction with a ghost island. Safe access to the site should not be compromised to accommodate a larger unit.
The Northampton Gateway development at Junction 15 of the M1 stipulates that to avoid adding more load onto the A508, all HGVs must turn north when leaving the site, except when an official diversion is in place. In such a situation, all those HGVs will be coming south to join the HGVs entering and leaving this site.
The traffic data collection site and timing were agreed with WNC in advance. It is not clear why data was not collected within the vicinity of Old Stratford A5 roundabout but 7+ miles away in Roade. The data was collected between 7 and 13 March 2022 when Cosgrove Park was not open. Cosgrove Parish Council have data to prove traffic movements when Cosgrove Park is open are much higher than during the closed season. For example a police speed data survey outside the Quarries Scout Camp on Stratford Road recorded 13,601 vehicles between 12 and 20 June 2023.
Traffic will be increased along the roads radiating from this junction and onto Deanshanger, Buckingham, Potterspury, Towcester, Yardley Gobion, Grafton Regis and Roade. This will cause further delays at peak hours. Traffic from Castlethorpe, Hanslope and Haversham will also be affected.