Police said the mixer’s brakes overheated and failed while travelling downhill, sending it into vehicles before it was stopped using rocks under its wheels.
Of the vehicles identified in Gurugram, 2,500 are BS-I to BS-III and 19,500 are BS-IV, with mandatory scrapping for the older categories.
Residents allege inadequate STP capacity and untreated discharge, while GMDA says drainage work should be completed within six months.
Police said a second-year University of Delhi student and a resident of Gurugram’s Sector 110 was driving the car