benborp
Guru
- Location
- further from Penge
The issue is that your eyes will be tracking any object that they are focused on and pretty much everything else in your field of view will be moving, whether it's passing by or even growing in perceived size as you approach. Peripheral vision is very good at perceiving small movements but that advantage of peripheral vision is lost if the whole scene is in motion rather than one small element of it. In such circumstances it's necessary to use the eye's central area with stronger acuity to pick out specific movement. The other advantage to using a vehicle's wheel to discern movement is that the wheel's movement is rotational and therefore different from and more easily perceived than all the other relative motion in your field of view, although again, in most circumstances you will need to use the eye's central vision to identify this rotation quickly....the whole car will be very much in your field of view, so surely you would notice the wheels moving?