Except that as already pointed out, it’s utterly useless as a deterrent.
It’s only ineffective because detection is pretty much nill.
Address the lack of detection and you begin to make it an effective deterrent. Of course I don’t hold out much hope of the rozzers actually priotising phone driver detection…
At the moment I witness several phone drivers a day, they’re all out there begging to be caught, In fact I have just reported the genius I saw watching sky sports on his phone while driving in busy traffic (towards a motorway junction) on Friday night.
Obviously I don’t expect them to try for a prosecution, I don’t have a dashcam so there’s no evidence, but I would like the police to at least have a word, and if driver’s start becoming aware that the driver behind or the cyclist they just passed might be a busybody like me (with a camera), they might just start obeying the rules… Well it’s a hope I suppose.
Of course it’s the lack of any consequences that keep arseholes like that, behaving like arseholes…