M1 HIGHWAY, GRAYSTON (B) SITE NUMBER : BB13-82 DESCRIPTION : This site is situated on the M1 Highway at the Grayston off ramp. This is arguably one of the most busiest offramp. Commuters travelling towards Sandton, Midrand, N1 Highway mainly use this route SIZE: 3M (H) x 12M (W) TRAFFIC : OMC IMPACTS : 6 475 406 GPS CO-ORDINATES : -26.1145, 28.07552