And we have a winner!
Solid painted lines on the highway are known as regulatory and or channelization lines. They are intended to guide or regulate the flow of traffic in that given lane.
It is unlawful to cross them, signal or not.
City and County of Denver made millions on the old airport tunnels over I70. The lanes were channelization lanes and they would write scores of tickets in one day on them.
Question for the LEO folks on electronic proof of insurance: if you hand your phone to Joe Occifer have you given up any reasonable expectation of privacy regarding the content of said phone? Meaning if you hand it to him is that essentially consent for him to nose through it?