I can only speak from experience. I rode a very quiet shaft driven bike for 3 years, and then I switched to a loud Harley. On city streets people were aware tha

I can only speak from experience. I rode a very quiet shaft driven bike for 3 years, and then I switched to a loud Harley. On city streets people were aware that I was there when driving the louder bike. On the quiet bike they would not notice me until I came right up alongside them. But that is the experience of one person.