You Learn Something Everyday!!
A white line across a driveway in a restricted parking area means that if a vehicle (any vehicle) was parked on the white lines it would not be subject to any enforcement by a Parking Attendant. This means that if you (the resident) was unable to exit your driveway you would need to report the matter to the police because the offending vehicle would be obstructing you from gaining access to the Queen's Highway. However, if you were trying to gain access to your premises the vehicle would not be deemed to be causing an obstruction and there is nothing you can do about it!
The markings are only introduced to assist on any site where residents have contacted the council and outlined particular difficulties they have, and not introduced as a
matter of course.