A woman says she witnessed a bus driver having sex at the back of the bus in front of her house.
Sonia Hill, 34, of Charville Lane, Hayes, says she was shocked when she looked out of her window and saw the naked legs of the couple kicking in the air.
Miss Hill along with other residents is now objecting to proposals by Transport for London to introduce additional stops in the area for the U7 route.
Two weeks ago the Gazette reported how neighbours were objecting to the plans after seeing male and female drivers urinate at the bus stand, fearing this behaviour would continue at a new stop.
Miss Hill said: "I was just putting up my net curtains and I looked out the window and saw a man on top of a woman - they were definitely having sex.
"I quickly closed the curtains. I was just gobsmacked and disgusted, anyone could have walked passed. It was only about 7.30pm.
"I then saw the bus driver get off the bus to have a cigarette and a pee in the bushes. After that he went on the U7 bus and made off."
Marie Wright, who also lives in Charville Lane, said: "I was absolutely disgusted when I heard about it, I don't want that kind of thing carrying on at my doorstep. I can understand drivers having to urinate but this is just unacceptable."
Councillor Peter Curling (Lab), who represents Charville ward, said: "Obviously residents don't want this sort of behaviour to continue, it's certainly something that needs addressing and not by putting extra stops in.
"They are also concerned because the roads are very narrow and because they don't want a semi-rural road to be destroyed."
A TfL spokesperson said: "We expect London's bus drivers to behave in an appropriate way.
"It would be completely unacceptable for any driver to engage in sexual activity while on duty.
"We have ensured that the operator, Travel London, is aware of these allegations and anyone with further information should contact London Buses customer services."