Assessing Road Maintenance Programmes on a 'value' Basis: Consideration of the Road Users' Requirements
T Buckland, Transport Research Laboratory, UK
Discussions were held with experts and groups of road users to understand how impacts of carbon and noise emissions from road maintenance could be captured within a whole life value model alongside the more commonly used works and user delay costs.
Road maintenance schemes have traditionally been assessed on the basis of cost; a combination of works and user delay costs. This is true both at a strategic and a project level. In recent years, there has been a push towards assessing maintenance taking account of the impact of value parameters such as carbon emissions, noise and water quality. A review of the literature showed that whilst project level tools exist to measure externalities alongside the internal costs the processes cannot be meaningfully utilised at a network or strategic level. This study has developed a methodology that can be used to develop maintenance strategies and evaluate the associated budgets for road networks using a whole life value approach that includes additional value parameters, carbon and noise.
The study included in-depth discussions with experts within the administration of the National Roads Authority, Ireland. Those discussions were held to establish current understanding of the importance of the impacts of carbon and noise emissions resulting from the management of road networks. In addition road users? views on road maintenance were investigated through a series of focus group discussions to determine their expectations of levels of service and the environmental trade-offs they would find acceptable. The results of the consultations are presented with a description of how they have been used to develop a whole life value model for road network maintenance strategies that takes account of the environmental parameters as well as the constraints (e.g. budgetary) within which road network managers have to operate.
Association for European Transport