Local authorities have limited resources to promote walking, cycling and public transport. Current funding has been leveraged through existing budgets to implement travel plans or in the case of new towns, through housing developers. Many local authorities promote activities such as walking groups or cycle training schemes and provide information about alternatives to the car. Other approaches include changing the physical environment or reducing financial barriers to promote walking, cycling and public transport. Financial incentives have been used to encourage other health behaviours but these have been rarely studied with respect to physical activity or the use of alternatives to the car. NICE recently reported that stronger evidence was still required about how environmental interventions may promote physical activity.