Gopi Devi, a resident of Najafgarh area in Delhi, was seriously injured in the mishap and was rushed to a local hospital where she was declared brought dead.
DND Flyway management said they were scanning CCTV footage to identify the vehicle involved in the accident.
Meanwhile in another incident, two persons from Meerut were injured on Yamuna Expressway as their car overturned near Nagla Gola in Agra.
Car driver Raju and owner Ram Prakash suffered injuries and were rushed to a Agra hospital.
In a third incident, a motorcyclist, Deepak, suffered minor injuries as his bike rammed into a road divider in Greater Noida after he lost his balance.