India, Sept. 15 -- When Navjot Singh, a government official on his way back from a gurdwara on his motorbike with his wife, was killed after a BMW sedan crashed into them on Sunday, his death was one of an average of four such tragedies that occur on Delhi's roads every day. And two-wheelers remain particularly vulnerable, shows official data.

Between January and May this year, the Delhi police have recorded 2,235 road accidents, which caused 577 deaths. While this is a decline from 652 deaths in the same period last year, the data still translates to a staggering average of nearly four deaths every day.

Involving two-wheelers, last year 2,300+ accidents were recorded. Of these 588 incidents caused 611 deaths. This meant fatal accidents...