New Zealand experience of road markings is similar to that of Australia and other countries in that some applications of road markings have been found to cause skid resistance and stability difficulties for bicyclists and motorcyclists. Central Laboratories undertook a study for Transit New Zealand to examine the skid resistance and stability issues of thermoplastic line markings. The study has involved the following phases: The establishment of a steering group, involving national cycling representatives; A review of best international practise for the specification of thermoplastic line marking properties of line height (thickness) and skid resistance on cycle routes; Assessment of line height on stability in ride over tests; Laboratory assessment of cycle tyre skid resistance on thermoplastic markings (variables of tyre type, inflation pressure and weight on tyre); and On the road measurements of skid resistance of markings and the relationship to laboratory tests. The study has found several areas of current practice, namely specification of materials, skid resistance, areas and manner of use, and line height, where improvements could be made to improve cycle safety. (a) For the covering entry of this conference, please see ITRD abstract no. E202275.
Samenvatting