Wynberg Grayston Drive, Johannesburg (B) SITE NUMBER : BB81-06 DESCRIPTION : Grayston Drive East of M 1 freeway facing traffic to Wynberg and Bramley from Sandton Rosebank and M 1 freeway off ramp from Johannesburg and Pretoria SIZE: 3m x 6m TRAFFIC : 90,000 Vehicles per day GPS CO-ORDINATES : -26.110031, 28.077674