  This chapter is written for the welfare of the society, questioning and
enlightening the effects of the increment or decrement in the percentage of
quality of air causing pollution due to the rise in the traffic post lockdown
due to COVID 19 in metro cities, specifically in Delhi. In this chapter, we
address the question about people's preference in moving in the shared taxis to
their workplaces or their reluctance and denial of the idea of moving in the
shared vehicle because of the fear of getting infected. The sensitivity of the
situation will compel the people to move in a single occupied vehicle (SOV).
The rise in the number of vehicles on the roads will result in traffic jams and
different kinds of pollution where people battling with the pandemic will
inevitably get exposed to other health related issues. We use a BPR (Bureau of
Public Roads) model to combat this issue endangering the environment and public
health. We exploit the BPR function to relate average travel time to the
estimated number of commuters travelling by car. We collect mode share data
from the NITI Ayog, the State Resource Centre and other authentic sources,
which gives unique figures of the impact of shared mobility in India and how,
in its absence, various sectors will get affected. Using the given data and the
BPR, we evaluate increased vehicle volumes on the road if different portions of
transit and carpool users switch to single occupancy vehicles and its effect on
multiple other factors. Based on the study of densely populated city, Delhi, we
predict that cities with significant transit ridership are at risk for extreme
traffic and pollution unless transit systems can resume safe with effective
protocols.
