Chichester District Council's Regulation 19 Local Plan Policy T1 Transport Infrastructure should account for the cross boundary mitigation contributions and remove the uncertainty over how cross boundary contributions towards schemes such as Bognor Road and Whyke road roundabouts will be pooled to other A27 mitigation solutions, such that there are no averse implications for delivering committed developments in Arun (e.g. West of Bersted, Pagham North and South). The policy or supporting text (e.g. paragraph 8.11) should also clarify whether any additional housing achieved via the monitor and manage approach above 575 dwellings per annum will safeguard against potential adverse cross boundary implications (e.g. on the A259 at Oystercatcher and Comet corner junctions in Arun) and how necessary mitigations would be phased/triggered with additional housing.

Arun District Council (ADC) is concerned that the proposed Policy T1 Transport Infrastructure is not effective or justified. Subject to ongoing Duty to Cooperate discussions with Chichester District Council (CDC), ADC hopes to resolve these matters with a view to securing a Statement of Common Ground and subsequent withdrawal of these objections before the plan is submitted:-

- The infrastructure constrained approach delivering only the two scheme improvements on the A27 at Fishbourne and Bognor roundabouts (delivering reduced housing numbers), and the potential cross boundary impact with additional mitigation scheme costs and uplift from ADC planned and committed development (e.g. West of Bersted) - uncertainty over ADC developments (i.e. West of Bersted, Pagham North and South) and their contributions towards A27 mitigation improvements e.g. A27 Whyke Road Roundabout;
- The strategy is silent about cross boundary future growth assumptions (e.g. Arun) that may assist with A27 capacity. This may cap A27 capacity and ADC's future plan making and developments unviable because of the need for additional improvements;
- A259 safety schemes in Arun at Comet Corner and Oystercatcher are accommodated in Chichester's infrastructure constrained development str5ategy approach up to 2039 without significant adverse impact and need for cross boundary mitigation. However, Arun would also wish to see this demonstrated for any additional development scale above the infrastructure constrained approach (575 dwelling per annum) to Chichester's full housing requirement over the plan period to 2039 and whether any cross boundary mitigation provision would be needed within this policy.