I am working through the Roundabout tool using the CAD element within MX Road V8 and am finding that when i look at the entry angles using first principles from TD16/07 Figures 7/8 or 7/9 that I am getting wildly different figures?
Can somebody advise on how the roundabout tool works these out and whether it is based on the Figure 7/8 that considers the entry tangent point and circulatioy carriageway tangent only or Figure 7/9 which considers the entry and exit tangent?
Should point out the remainder of the information for the entry width, exit width and effective flare lengths are all working it out correctly,