noor2fml, i salute you for sharing this to us. i can sense the goodness of your intention. please pursue your plan of doing survey. this will give strong signal to the bus drivers that they are being watched and expected to be honest, polite in doing their noble job.
may i suggest that you call the attention of the karwa company before or after the survey. this way you can have their support and it will make the job easier.

progress