It was one of New York City’s deadliest streets, a combat zone where one pedestrian after another was mowed down trying to get across.

Cars and trucks hurtling down Queens Boulevard left a rising death toll in their wake, including 18 pedestrians killed just in a single year, in 1997. Overall, since 1990, a total of 186 people have been killed on this one street, of whom 138 were pedestrians.

Before long, the street earned lasting notoriety in tabloid headlines as the “Boulevard of Death.”

But today, the Boulevard of Death is no more. Not a single pedestrian or cyclist has been killed on the seven-mile long thoroughfare that slices through Queens since 2014. “The Boulevard of Death has become the Boulevard of Life,” declared Mayor Bill de Blasio in an interview. “We’ve turned the corner.”

Queens Boulevard has become the poster child for Mr. de Blasio’s ambitious Vision Zero campaign to eliminate traffic deaths citywide through a host of enforcement measures and safety improvements, including redesigning streets and re-timing walk signals to give pedestrians a head start in crosswalks.