M1 Highway, Marlboro (B) SITE NUMBER : BB13-86 DESCRIPTION : Situated on the M1 Highway just after Marlboro . Heading towards Midrand , N1 Highway and Pretoria SIZE: 9M (H) x 6M (W) TRAFFIC : OMC TRAFFIC COUNT : 8 431 488 GPS CO-ORDINATES : -26.072833, 28.088917