I haven't been caught out, but then I usually slow down when going past them as they tend to park partially into the lane to protect the officer standing at the door of the offender (or victim according to the person pulled up). It is also shady as they have never really pinned down how many lanes ...

I'm not sure how an LCD or digitizer would hold up to a quick freeze. It would depend on the thermal ratings, but most parts are not designed to operate below 0℃ or change temperature quickly ( ΔT is typically low)... Will post what I find when I tear mine down and clean it up... I put my S4 active...