Only shocking people will get many to understand how serious this is. Sadly, photos of the accidents no matter how serious the consequences isn't enough. An evening in A&E or outside the mortuary seeing the daily body count might affect some.
I daily see people tearing around the roads on our estate and frequently using their mobile. The main road is 30mph but every time I walk the dog (several times daily) I see drivers doing in excess of 60. They don't connect with the fact these are the same roads and pavements that their kids use to walk to and from school. If they're so dim, they'll never see the risks elsewhere.
Lets start with 6 points, a £1000 fine and/or your car impounded for six months and enforce it - No second chances. Thats a deterrent.
Oh b***er - We don't have police any more do we?