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Theme 4: Project 7 - Methods for assessing the public health benefits of local transport interventions
Transport interventions have an important role in reducing air pollution concentrations. Transport interventions within cities are also important for the Environmental Change HPRU, Theme 2 on healthy, sustainable cities. This joint project plans to take advantage of synergies between the two HPRUs using the HIA methodological expertise in this HPRU and the link to co-benefits assessment (air pollution, physical activity, land use and traffic accidents) in the Environmental Change HPRU.
School travel plans have been selected as meeting 2 PHE objectives, air pollution and early life. There are particular challenges in assessing the air pollution health impacts of local transport interventions: (i) the studies used for concentration-response functions may not be at the fine spatial scale needed to assess the impact of concentration changes at roadsides; (ii) the population affected may be very small; (iii) health impact assessment of some other risk factors for co-benefits may be less well developed than for air pollution; (iv) changes in transport behaviour affect personal exposure to air pollution and (v) the links between the broader exposure metrics used in epidemiological studies and personal exposure are poorly understood.