Transport Evidence Base

Strategic Transport Modelling

To support the Local Plan the Council has commissioned Transport Consultants Systra to undertake strategic transport modelling of the Local Plan Review using both the North Hampshire Transport Model (NHTM) and Solent Transport Model (STM).

This strategic Transport modelling will be undertaken in three stages:

Stage 1 - Baseline (2036) 

This forms the baseline for which the Local Plan proposed development will be assessed. The baseline represents a scenario that includes all present day completed development (as of 1 April 2018) in addition to planning consents as of 1 April 2018.

The baseline does not include the draft Local Plan proposed allocations that did not benefit from planning consent on the 1 April 2018 (approx. 3,700 dwellings) or the Local Plan windfall allowance (approx. 1,000 dwellings). This is because the draft Local Plan can change following the public consultation and we want to only test the final proposed site allocations.

This stage is complete and can be accessed in the Interim Transport Assessment.

Stage 2 – Do Minimum Baseline (2036)

Stage 2 will build off the Baseline scenario and include for the proposed housing and employment allocations as identified in the Proposed Submission Local Plan (Summer 2019) (that did not benefit from planning permission on the 1st April 2018) and the Local Plan windfall allowance. By comparing Stage 2 Do Minimum to the Stage 1 Baseline, the transport impacts resulting from the Local Plan proposed development without planning consent is isolated. Transport congestion hotspots can then be identified.

The outputs of Stage 2 will form inputs to a detailed Transport Assessment that will identify appropriate mitigation (junction improvements) at the transport hotspots.

This stage will be undertaken to support the Regulation 19 Proposed Submission Local Plan that is due to be published later in 2019.

Stage 3 – Testing of Transport Mitigation

The proposed mitigation measures will be incorporated into a final NHTM & SRTM model runs to confirm the transport impacts of the local plan have been mitigated against.

This stage will be undertaken to support the Regulation 19 Proposed Submission Local Plan that is due to be published later in 2019.

Draft Local Plan Site Highway Assessment

To support the Local Plan the Council has commissioned Hampshire County Council’s Engineering Consultancy to carry out a Highways Assessment to identify viable highway access to most of the allocations contained within the draft Local Plan.

The study has not assessed those sites in the Local Plan that:

  • Have planning consent
  • Are current allocations or reserve allocations in the Development Plan
  • Are for small scale development, such as extensions to established gypsy and traveller sites.

The Highways Assessment identifies potential access arrangements for each of the 26 sites assessed.

Local Transport Studies

To support Neighbourhood Planning localised transport studies have been commissioned and published for Alton (June 2015) and Liphook (July 2018). These studies were not commissioned to support the Local Plan Review and can therefore be located on the relevant Neighbourhood Planning webpages.