Edinburgh Napier University

  Variety of road based transport modes catering to the transport demand ply in large number on the road system of urban India. As a result, the traffic and transportation problems are aggravating day by day. These problems manifest in the form of increased traffic congestion, increased air and noise pollution, accidents, delays etc. The consumption of fuel is on the increase due to enhanced trip lengths, shift of modal share towards personalized modes of travel and at signalized intersections due to idling of vehicles during stoppage phases. The results of a study conducted by CRRI in 2005 estimated that fuel worth of Indian Rupees. 1, 0000 Million is wasted every year in Delhi by vehicles idling at 600 signalized traffic signals and was around 15% of the total fuel consumed annually in Delhi. In addition, the time loss to the commuters is also associated with the delays. The running engines during idling also generate emissions, which are harmful both for human health and ecology. One of the ways to conserve fuels is to minimize its wastage. It is necessary to understand the amount of fuel loss and emissions generated at signalized intersections in the country. By applying various engineering / management measures the fuel wastage and associated emissions can be reduced. Presently there is no model that can give the amount of fuel loss and emissions in relation to the type of vehicle and delays. In this paper a review of the study for exploring suitable mitigation measures to improve the signalized intersections are presented.