Chapter 26 - General Rules Table 26.2 Minimum Sight Distance from Intersection 85 percentile* Sight Distance (m) speed (km/h) Optimum Minimum (Entering Sight Safe Intersection Distance) Sight Distance) 50 125 80 60 160 105 70 220 130 80 305 175 90 400 210 100 500 250 110 500 290 120 500 330 c) The 85th percentile speed shall be determined in accordance with the method set out in the AUSTROADS Guide to Traffic Engineering Practice Part 3 Traffic Studies, Chapter 4 (1988). The visibilities shall be measured in accordance with Figure 26.8. d) The available sight lines at existing intersections shall not be obstructed by buildings and other structures, fences and vegetation. e) Any new intersection to be formed with a State highway shall be no closer than 100 metres to any existing access on the highway or 30 metres if the access is on the side road. Note: Distance measurements are to be taken from the nearest intersection of road reserve boundaries to an access, or in the case of a T intersection, the prolongation across the intersection of the road reserve boundaries of the intersection road. 26 - 21