A Drive in LA at Night

I  was driving  at night on a dark and busy street in LA and wanted to change the radio volume and station. I needed to keep my gaze forward (at label A and yellow outline of my sunglasses). Some controls (labelled B)  were easy to see in my peripheral vision because they were large, round and illuminated. This also made it easy to reach  feel them without looking down. In contrast, the radio station selection buttons  (yellow, dotted rectangle between top B’s) lacked tactile distinguishing features, were small and were hard to see. In this case, prolonged central gaze was needed to distinguish one button from the other.  

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