The Civil Engineering Contractor July 2018 | Page 21

ON SITE Table 1: Traffic count data Site CTO Station no. Direction of traffic Proefplaas IC SB On 1867 Proefplaas IC N4 EB Traffic volume data Average daily traffic (ADT) Average daily truck traffic (ADTT) Percentage of trucks SB 65818 4859 7.4 1461 EB 48911 2276 4.7 Proefplaas IC N4 WB 1462 WB 40894 1756 4.3 Watermeyer St I/C 677 EB 41308 3190 7.7 WB 42622 2894 6.8 Rossouw St I/C 678 EB 32666 2883 8.8 WB 35815 2324 6.5 Simon Vermooten 679 EB 16569 1000 6.0 951 WB 20996 1080 5.1 691 EB 21875 1635 7.5 WB 23910 1591 6.7 Hans Strijdom Dr I/C* *Hans Strijdom Drive is the old name for Solomon Mahlangu Drive, but still the name of the CTO Station. Van Rensburg adds, “This project is a reseal, that is why it is 25mm and this specific stone mastic asphalt is intended to carry heavy traffic, made specifically for this project by National Asphalt.” He refers to the project’s documentation, which shows that at the Proefplaas intersection where it joins the N1 for example, the traffic volumes reach 60 000–70 000 vehicles a day, of which 7.4% are trucks. Under standably, diver ting this amount of traffic around the roadworks requires detailed, planned operations, Van Rensburg stresses. This traffic challenge is exacerbated by the average South African driver’s mentality, where a shortcut is the norm, jumping lanes a given, and intolerance the standard, Van Wyk points out. The project is proceeding on time and both KPMM and National Asphalt are confident that it will be completed within its time frame. nn