Skip to main content

Table 3 Some key issues affecting the predictive value of transport HIA

From: Assessing the unintended health impacts of road transport policies and interventions: translating research evidence for use in policy and practice

• Multiple outcomes present conflicting overall benefit and harm at different levels
• Lack of empirical support for plausibility of links to actual health impacts
• Numerous steps and mediating factors influence links between transport and health
• Defining a transport intervention and affected area and population not always straightforward