New Delhi, Oct. 1 -- The Delhi High Court on Wednesday issued notice in a petition seeking implementation of mandatory safety protocols and standard operating procedures for app-based transport aggregators. "We want to make the private operators of the taxi apps accountable," a bench of chief justice DK Upadhyaya and justice Tejas Karia said while asking Uber, Ola, Rapido and the Delhi government to file their response. The petition was filed by one Aditya Sehgal. He also sought implementation of safety measures: the driver and vehicle's details should correspond with those displayed on the app, riders should be allowed to cancel a ride without incurring a penalty in cases of unauthorised substitution, and incidents be recorded as safety re...