Andhra Pradesh State Road Transport Corporation [Apsrtc] — pollution of the city buses around the city

Address:

Krishna, Andhra Pradesh, 520007

I use motorcycle to travel to and fro home to office daily. Everyday there is definitely a public transport bus (City buses) which covers the road with the smoke from it. So today i thought it was high time and recorded a video on my phone while driving, knowing that it is risky to do that. So, i'd like to complaint about the condition of the city buses in vijayawada, krishna district, andhra pradesh, which produce a lot of black smoke covering the entire road sometimes.
I'd ask the concerned authorities to take proper action to repair or replace these buses.