Roads and Maritime Services

In the context of the Safe System approach for harm minimisation where fatal and serious injuries are not accepted as inevitable costs of mobility in any transport system, there is an increasing need to consider implementing speed limits within the biological tolerance of road users. The need to implement speed limits lower than 40 km/h in an urban area with high pedestrian movement and activity has been recognised by an Australian state road agency. Through a literature review, stakeholder consultation with road transport agencies in Australia and New Zealand and a Safe System analysis, this paper presents the development of guiding principles in implementing 30 km/h speed limits and zones in Australasia. The implementation principles have been developed to inform a revision of the existing speed zoning guidelines and its applications within the jurisdiction, which are also applicable elsewhere across Australasia and internationally.

Abstract This paper identifies the challenges and risks in the design, construction, and product conformity of shared (pedestrian and bicycle) path bridges. Also, the paper describes how these challenges were managed and the risks mitigated. The biggest challenge in the design of this project was the erection of the superstructure with minimum disruption to the traffic. The steel arch structure was designed to span 42 m over the width of 6-lane carriageways plus the median on the busy Epping Road at Marsfield. This was further complicated when the fabricator proposed procuring circular hollow sections from other economies that generally use a steel that is manufactured to other national standards without providing enough evidence of compliance to Australian product standards. This could jeopardize the validity of design that was undertaken in accordance with the Australian bridge design standards. The project was designed and managed by a multidisciplinary team from Roads and Maritime and constructed by a ...