Highly pollutive bus routes – including two regularly used by students – are set to be upgraded by the end of the year to help clean the city.
The 52a and the 95 First bus routes are among the worst pollution corridors in the city and are regularly used by students who live in Crookes and Walkley.
The Council is to retrofit 117 buses with emission reduction technology at a cost of £1.9 million by the end of the year.
Councillor Jack Scott, cabinet member for transport and infrastructure at Sheffield City Council, said: “Polluted air is a public health emergency across our country and we need to take decisive and urgent action to clean up our air.
“I am absolutely committed to a greener and cleaner future for everyone in Sheffield.”