What is BS 6571-7 - Specification for parking discs about?
BS 6571-7 is a British Standard that specifies the requirements for the design, physical dimensions, quality of materials and functional performance of:
Parking discs to control time limited parking without payment (Type A discs)
Parking discs to control time limited vehicle loading/unloading (Type B discs)
Parking discs to control time limited parking in association with a permit issued to a vehicle (Type C discs)
Parking discs for use in connection with exemptions for disabled persons from certain requirements of parking or traffic regulation orders (Type D di...