Impact of increasing mass transit share on energy use and emissions from transport sector for National Capital Territory of Delhi

The growth of personalized vehicles on road and the declining public transport share in Delhi is creating mounting environmental problems. An efficient public transport system may promote a shift towards mass transit modes resulting in reduced emission and cleaner environment. This study examines the impact on energy use and the environment that may take place after the introduction of alternative public transport systems. In this context, two scenarios – increased bus-transit and metro rail – are compared with a business as usual scenario. The comparisons are made in terms of energy used and emissions based on 2005 and shows that a bus dominated transit system would result in 31% reduction in energy use, while for a metro rail dominated transit system it would be 61%.

Research highlights► The Short Communication looks at the impact of modal shift on the energy and environment impacts of transport in India. ► It compares the environmental situation in 2005 with scenarios relating to 2025/2026. ► The study shows that a bus dominated transit system would result in 31% reduction in energy demands, while for a metro rail dominated system it would be 61%.