Bad road designs, lack of maintenance, overloaded trucks, tired and untrained drivers, increasing number of liquor shops on the sides of the highways and lack of enforcement of traffic laws is making the situation worse. Looking at increasing numbers of these fatalities, Maruti Suzuki introduced the Institute of driving and traffic research along with state governments to make a difference. And as part of the Diageo-NDTV Road To Safety campaign, we take a trip down India's killer highways to understand what is turning our highways – the lifelines of our country – into death zones.