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Traffic Impact Study
A27 Polegate Bypass
Report May 2003
Executive Summary
The A27 (T) Polegate Bypass and A22 County Road opened on the 19th June 2002. The bypass provides an alternative route for east-west traffic through Polegate, East Sussex, and connects with the A22 scheme to Eastbourne at its eastern end, as illustrated in the diagram below. 'Before and 'After traffic data for the bypass was collected immediately prior to and after the scheme opening in order to monitor the effects of the new scheme and prepare a Traffic Impact Study (TIS). In addition, traffic data from East Sussex County Council and Highways Agency permanent count sites was obtained to evaluate the effects of opening of the A27 (T) Bypass and A22 County Road on strategic traffic routeing patterns in the area.
The main effects of scheme opening are as follows:
- 23,500 vehicles used the A27 (T) Polegate bypass in the first week of operation, and traffic volumes on the old A27 through the town dropped by 10,500 vehicles from 19,400 to 8,900 vehicles per day after scheme opening;
- Therefore the scheme has been successful in reducing traffic volumes in the town of Polegate;
- There has been a major switch of traffic onto the A22 from the parallel B2104 between Hailsham and Polegate;
- Journey time savings of over 4 minutes are possible for movements that previously used the A27 through the town;
- Over 20,000 vehicles use the new A22 County Scheme on an average weekday;
- There has been a switch of traffic onto the A22, mostly from two parallel roads into Eastbourne, namely:
- A reduction of 11,000 vehicles per day was recorded on the B2104 Friday Street; and
- A reduction of 5,000 vehicles per day on the A2270 Eastbourne Road was observed.
- Therefore the county scheme has also been successful in reducing traffic volumes on other routes in the area in that:
- Traffic flows through Pevensey and Westham has been significantly reduced. Traffic flows on the Pevensey bypass (A27) has increased by some 4,400 vehicles per day (49%) while the daily traffic flows through Pevensey and Westham on the B2191 traffic has been reduced by 2,700 vehicles per day (24%);
- A reduction of 900 vehicles per day (7%) has been observed on the A259 East Dean Road through East Dean;
- A major benefit of the A27 / A22 schemes is the large reduction of (44%) heavy goods vehicles (HGVs) on the A2270 Eastbourne Road through Willingdon; and
- There is some evidence of a switch on to the A27 / A259 trunk road from the A259 west of Eastbourne and the A271 east of Eastbourne.
- The combination of the two schemes has led to 2,000 additional trips using the A259 Seaside Road, which is due to movements between Polegate and Eastbourne switching to the new schemes as opposed to the A2270 through Willingdon.
