The Gauteng Provincial Gazette No 265 , dated 10 December 2009 stipulates:
1. New Gauteng Vehicle Registrations
All Vehicles registered with the new number format [BB99BB*GP], as specified in this notice, shall use the new plate format, as specified in this notice.
2. Existing Gauteng Licensed Motor Vehicles
All Vehicles registered with the license number format [BBB999*GP] shall use that number until it expires on the date as specified in this Notice:
3. Gauteng Vehicles Licensed with a Personalised or Special Number
(a) All vehicles licensed with a personalised or special number plate shall use the new number plate format from 1 January 2011
(b) All vehicles licensed with a personalised number of the format [BB99BB*GP] shall by 31 December 2010.