They probably WILL become mandatory,not because the NTA says so,but because punters will demand them because a few drivers have them..so effectively every driver that gets one,is putting pressure on another driver to get one.can nobody see where this is going ? This fukin screen will,eventually become part of suitability ,and any scratches graffitie etc will result in a fail,and YOU will be responsible for bringing in these new fukin rules,nobody else..I cannot believe none of you can see where this is going