When a vehicle performs a turning manoeuvre, the rear of the vehicle covers a wider path towards the inside of the turn than the path of the foremost vehicle unit. The swept path envelope is the road area covered by the outermost and innermost points of the vehicle units during the turn. It is necessary for road practitioners to have access to swept path information for a number of vehicles in order to provide appropriate and safe access at intersections. This guide has been developed to assist intersection designers and contains: * user information and a guide covering the basis of turning templates and road hierarchy * design vehicle dimensions * turning templates. The turning path templates presented are plots of the swept path envelope resulting from various angles of turn at a particular radius. This is the third revision of the design vehicles and turning templates, which were first published by the National Association of Australian State Road Authorities (NAASRA 1985). The first revision was published in 1995 (Austroads 1995) with the second revision published in 2006 (Austroads 2006). Changes in the third revision include: * Two vehicles initially did not achieve the performance required to be allowed access to the road class that would be expected of the vehicle. These were the 26 metre B-double and the B-triple. These vehicles have been modified slightly so that they achieve the required performance, while still being representative of the vehicle fleet. * Both the Design Vehicles and Turning Path Templates Guide and the turning templates have been updated to be more consistent with the more recently released Austroads Guides, particularly the Austroads Guide to Road Design. * Formatting issues identified in the second revision, such as inconsistent scale and poor colour choice, have been rectified. (Author/publisher) For the complete guide see: https://www.onlinepublications.austroads.com.au/items/AP-G34-13
Samenvatting