There is a delay. I'd say half my chimes while I'm driving are from behind me. If you watch yourself on the rider app, you'll notice that your car is about 30 seconds or so behind you. My theory is that is where Uber actually thinks you are when a request comes in. So if a request comes in while I'm flying past exit 10 at 70 MPH, Uber thinks my car is 30 seconds away from taking that exit.
That's my theory anyway.
That's my theory anyway.