| 1. |
- Benbow, Emma, et al.
(författare)
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Toolbox, review of functional triggers : Selection of maintenance candidates
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- ToolBox aims at developing a “concept for proper maintenance planning” to assure the selection of adequate maintenance works (“schemes” or “objects”) to make effective use of the maintenance budget, based on available road condition data, to give minimal negative effects on road users, safety for road workers and the environment. This report covers the first phase of the ToolBox findings and development. In chapter 2 there are a discussion on technical parameters and the use of them. This is followed with a listing of available technical parameters in the partner countries, chapter 4. A state of the art covering how selections of maintenance candidates are done in the respective countries follows including a comprehensive reporting of indicators and parameters available. Finally the chapter 6 covers the selection of models that will be used to evaluate the functional performances decided.
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| 2. |
- Sjögren, Leif, et al.
(författare)
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Investigation of good practise in road assessment, Heroad
- 2012
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Ingår i: EPAM 2012Malmö, Sweden, 5–7 September : 4th European pavement and asset management conference. - Linköping : Statens väg- och transportforskningsinstitut. - 9789163714320
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- To manage the road network road managers and operators have to consider existing policies such as the requirement to keep the network in good condition, and to deliver this condition at minimum whole life cost. However, the condition should also meet the expectations of stakeholders. The management process has to optimise the total costs for society, whilst minimizing the effects of given condition levels on safety, reliability, environmental impact, economics and sustainability. This principle and its overall goals are equal for all road managers around Europe. Heroad will investigate the process (the combination of individual components, levels of assessment and the inclusion of a life cycle perspective) to incorporate also new challenges in the asset management. This includes:Look at data collection, assessment and reporting regimesConsidering new challenges (climate change, traffic configuration, new materials, LCC and the focus on road users expectations)Identify and assess the key technical components of these regimes and then determine whether they are best practice or notIdentifying and describe indicators at different assessment levels (for road operators complicated technical parameters are okay, for decision makers and public more understandable indicators that could be built from combination of technical parameters are needed)Then pick out the key good parts and provide advice to the customer on how they could use them.
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| 3. |
- Sjögren, Leif, 1953-, et al.
(författare)
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Overall road asset performance
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The HeRoad project has investigated the road asset management situation and what practises exist to collect performance measurements in Europe. This has been done in a view from the operational level using a holistic perspective, in the sense that multiple assets and the cross relation between those are included. HeRoad’s approach by addressing the need for condition performance measurements can be justified with some words from (AASHTO, 2011); “What´s measured gets done; if you do not measure results, you cannot tell success from failure.” This implies that the view of investigation has been from the operational level more than from the strategic level (bottom–up).
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| 4. |
- Sjögren, Leif, 1953-, et al.
(författare)
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Toolbox, selction of maintenance candidates based on new triggers
- 2014
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Ingår i: Transport Research Arena (TRA) 2014 Proceedings. ; , s. 8-
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Konferensbidrag (refereegranskat)abstract
- Maintenance of paved roads is carried out to preserve and improve the pavement and reduce the deterioration process. An adapted treatment will make the pavement last for a certain time interval before next treatment is necessary. Pavement managers deal with complex decisions when identifying lengths of their networks in need of maintenance and selection of the appropriate maintenance treatments.Decades of road network monitoring and follow up projects have generated a huge volume of empirical data on pavement condition. To complement this information, several decades of research and development has accumulated a substantial volume of knowledge, models and tools that can use the information to assist in maintenance decisions. Even so, these support tools are not yet implemented to their full potential, and most tools do not address user expectations and new environmental impacts such as fuel consumption and emissions. This paper will demonstrate a tool to assist road authorities in optimising the maintenance of their road networks.
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| 5. |
- Sjögren, Leif, 1953-, et al.
(författare)
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Toolbox, Selection of maintenace candidates : Summary report
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The ToolBox concept is applicable in the selection of lengths for maintenance (candidates), linked to comfort, safety, durability and the environment, including how the data is used, combined and weighted within current decision tools and models. ToolBox has not developed new models, for the technical parameters that are not currently measured (e.g. fuel consumption) but identified and extracted key tools from existing models used in Europe. The work has considered and developed an understanding of how existing knowledge (data) should be used to account for road user expectations in the selection of object lengths for maintenance. These existing and new concepts have been used to establish a set of functional triggers for selecting lengths (candidates) for maintenance on the network that include road user expectations and combine them to make recommended prioritised treatment objects.
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| 6. |
- Wright, Alex E., et al.
(författare)
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Hi-SPEQ : Developing the Technical and Quality Requirements for High-speed Condition Surveys of Road Networks
- 2016
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Ingår i: Transportation Research Procedia. - : Elsevier BV. - 2352-1465. ; , s. 2956-2965
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Konferensbidrag (refereegranskat)abstract
- High speed surveys have become a key source of information to support condition assessment and management of pavement assets. These surveys can be applied network wide to obtain data on the surface condition and structural robustness of the pavement. However, these advances bring challenges to road administrations in determining the most appropriate survey to specify for their networks, in selecting the equipment, and in ensuring that the condition parameters delivered will be suitable to support asset management decisions. Although standards have been developed for some of the measurements provided by high speed systems, the focus tends to be highly technical, often not considering the wide ranging needs of routine network level implementation.The HiSPEQ project has the objective of developing guidance and advice to help road administrations to understand high speed road survey equipment, and to help them in specifying the survey requirements, quality regimes and processing procedures. The project has considered high speed survey data that can be used to assess pavement structural robustness. It has investigated the measurement of pavement shape, visual condition, deflection and structure. Via review of current specifications both within and outside the EU, and direct consultation with practitioners and administrations, the project has proposed a set of core requirements for high-speed surveys of pavement surface and structural condition.
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