The application of the principles of road management.
: The International Roughness Index (IRI) has been accepted globally as an essential indicator for assessing pavement condition. The Laos Road Management System (RMS) utilizes a default Highway Development and Management (HDM-4) IRI prediction model. However, developed IRI values have shown the need to calibrate the IRI prediction model. Data records are not fully available for Laos yet, making it difficult to calibrate IRI for the local conditions. This paper aims to develop an IRI prediction model for the National Road Network (NRN) based on the available Laos RMS database. The Multiple Linear Regression (MLR) analysis technique was applied to develop two new IRI prediction models for Double Bituminous Surface Treatment (DBST) and Asphalt Concrete (AC) pavement sections. The final database consisted of 83 sections with 269 observations over a 1850 km length of DBST NRN and 29 sections with 122 observations over a 718 km length of AC NRN. The proposed models predict IRI as a function of pavement age and Cumulative Equivalent Single-Axle Load (CESAL). The model’s parameter analysis confirmed their significance, and R2 values were 0.89 and 0.84 for DBST and AC models, respectively. It can be concluded that the developed models can serve as a useful tool for engineers maintaining paved NRN.
Ministry of Infrastructure, Ports, Energy and Labour (MIPEL) of Saint Lucia is responsible for maintenance of over 1 000 km of roads. Before implementation of the Road Asset Management System (RAMS) the maintenance philosophy was ad-hoc and reactive. This paper describes the implementation of the RAMS as part of a shift from reactive to preventive maintenance.
The biggest task in the establishment of the RAMS was the extensive data collection. Data collection included GPS data on the road centrelines, calibrated International Roughness Index of the whole road network, orthophotos and 360-degree images, photography, traffic counting as well as pavement distress and road inventory based on the collected digital imagery. Besides roads, inventory and condition data was collected on all the bridges. Webbased Road Management System, Road Inventory System and Bridge Management System were implemented and used for maintenance planning. Capacity building with both on-the-job training and classroom training were carried out. The road network is in fair condition with some very congested roads. The maintenance budget should be increased and RAMS should be further institutionalised for processoriented activities for improved road condition in the future.
Rural road connectivity is a vital and essential component for rural development. It provides productive employment avenues and increases the household incomes of the rural masses. By bridging the gap it provides access to economic and social services which results in ensuring sustainable poverty reduction. Pradhan Mantri Gram Sadak Yojana (PMGSY) is one of the ambitious and productive initiatives of Government of India with the vision to increase connectivity which in turn aims to provide sustainable and inclusive growth of rural India. A detailed study has been presented to develop a generic Pavement Management System (PMS) applicable for PMGSY roads in the state of Rajasthan using HDM-4 (Highway Development and Maintenance Management System), which serves basis for streamlining important processes according to routine and sound practices for the highway engineers responsible for maintaining the rural road network. The study presented herein would assist the budgeting authorities for sensible allocation of funds and ensuring consistent and cost effective decisions, related to maintenance and rehabilitation (M&R) of pavements. This paper also evaluates impact of change in environmental scenario and harmful effects of pollution for the next ten years by considering emission of seven harmful gases, namely Hydrocarbon (HC), Carbon Monoxide (CO), Nitrous Oxide (NOX), Sulphur Dioxide (SO2), Particulates (Par) and Lead (Pb).
The road traffic has increased manifolds during the post-independence in India. The traffic axle loading may be much heavier than the specified limit in many cases. As a result of which, the existing road network has been subjected to severe deterioration leading to premature failure of the pavements. There is a dire need of developing a meaningful approach towards implementing the maintenance and rehabilitation schemes of the road network. In such a scenario, development of the effective pavement management strategies would furnish useful information to ensure the compatible and cost- effective decisions so as to keep the existing road network intact. The optimum maintenance and rehabilitation strategies applied in this study would be useful in planning pavement maintenance strategies in a scientific manner and ensuring rational utilization of limited maintenance funds. Once this strategy for urban road network is implemented and made operational; this would serve as window to the other urban road network of different regions.
In India, the road traffic volume has increased manifolds during the post-independence period. The traffic axle loading may also in many cases be much heavier than the specified limit. As a result of which, the existing road network has been subjected to severe deterioration leading to premature failure of the pavements.In such a scenario, development of the effective pavement management strategies would furnish useful information to ensure the compatible and cost- effective decisions so as to keep the existing road network intact. The pavement deterioration models can prove to be an effective tool which can assist highway agencies to forecast economic and technical outcome of possible investment decisions regarding maintenance management of pavements. The optimum maintenance and rehabilitation strategies developed in this study would be useful in planning pavement maintenance strategies in a scientific manner and ensuring rational utilization of limited maintenance funds. Once this strategy for urban road network is implemented and made operational; this would serve as window to the other urban road network of different regions.
This thesis identifies the main problems and challenges for successfully adopting PBC are discussed and analyzed. In order to assist contractors as well as road managers a methodological framework is developed and examined in this thesis. The developed framework necessitates the identification of many cornerstones to effectively manage pavement conditions in the Emirate of Abu Dhabi. The main components of the developed framework include 1) developing a robust database of detailed knowledge of the road network, 2) developing practical models to predict the present and future conditions of the pavement, and 3) developing robust models to optimize maintenance strategies. The developed framework was applied on a case study using data from the City of Abu Dhabi.
Report describing municipal pavement management systems.
This paper provides an overview of the planning, management and the execution of pavement maintenance and rehabilitation works on the N3 Toll Route between Heidelberg (Gauteng) and Cedara (Kwazulu Natal) which is operated by N3 Toll Concession (Pty) Ltd. (N3TC). The paper focuses on the annual cycle of Pavement Management System (PMS) activities needed to sustain and protect the road asset, with an emphasis on procedures required for meeting contractual obligations of functional condition and hand-back criteria for remaining pavement life. The PMS processes are outlined in the context of a Toll Concession, followed by more in-depth discussions of two key aspects of N3TC’s annual PMS cycle, namely (i) compliance and network condition reporting; and (ii) the rule-based deterioration model used for analysing network deterioration under a given maintenance and financial strategy. The paper concludes with a “lessons learnt” section that highlights some of the lessons learnt in the first decade of management of this contract.
Interesting paper comparing Ireland's PMS models with HDM, and New Zealand's experieinces.
Ireland has a national road network of approximately 5300km which is managed by Transport Infrastructure Ireland (TII). TII create yearly pavement maintenance and renewal programmes using a Pavement Asset Management System (PAMS). Accurate pavement deterioration models and reset values are an essential part of a PAMS and are required for life cycle cost analysis (LCCA). Pavement maintenance and renewal schemes are prioritised based on the LCCA's largest benefit to cost ratio, thereby optimising the annual pavement maintenance and renewal budget. Currently, TII implement pavement deterioration models based on models used in Austria and Belgium, with modifications appropriate to Irish conditions. The reset values in use are based on best estimates of expected treatment effects and were not initially based on the measured post-treatment condition. This research aims to refine and improve the deterioration models currently in use and to calibrate the treatment reset values using measured pavement condition on treated sections of pavement. Several long-term pavement performance (LTPP) monitoring sites were selected for the analysis. The LTPP monitoring sites consist of newly constructed and recently maintained pavement sections throughout the Irish national road network for each subnet category. The international roughness index (IRI), rut depth and longitudinal profile variance 3m (LPV3), measured annually from 2010 to 2019, were analysed and compared to the current PAMS's pavement reset values and deterioration models. Generally, the measured reset values of the LTPP monitoring sites were lower than the TII's PAMS reset values, indicating that TII's PAMS may underestimate the treatment benefit for the LCCA treatment prioritisation process. The measured pavement deterioration rates were also typically lower than the predicted pavement condition values of TII's PAMS. This research concludes that an update to the PAMS, using better calibrated deterioration models and reset values would be highly beneficial. The LTPP monitoring should be continued to assess the longevity of the applied pavement treatments and consequently, determine the full deterioration model for each of the LTPP monitoring sites into the future.
Maintenance backlog can be used as a common and comparable denominator of road maintenance results for different types of road sub-assets and for different management tasks. The objective of the project was to prepare recommendations for the comprehensiveimplementation and use of maintenance backlog indicators (“best practice”).
The project covers the following sub-assets of the road infrastructure:
• Pavements (trafficked and non-trafficked areas)• Engineering structures (bridges, tunnels, walls and other engineering structures)• Road furniture (signs, guardrails, lights, etc.)
This road management tools guide gives an overview of 14 selected tools for road infrastructure management, and explains how they can assist road administrations and contribute to improving road management practices. This manual captures, in a single document, important features of these tools, scattered around in various documents and on various websites. By providing easy access to basic information for each of the tools, the document intends to promote their use in the SSATP member countries (and key partners groups within).
This road management tools guide is aimed at decision-makers in road administrations who may not always have the necessary technical background or time for in-depth study, but for whom a basic understanding of these tools may be desirable, if not essential. This guide is also intended as an introduction to first-time readers at the technical level. For these readers, this document provides sufficient information and the necessary context to guide them in selecting appropriate tools. It also strives to “wet their appetite” for a more in-depth study of these tools, which is a prerequisite for their application to real-life situations.
This is the interim report from the project implementing an RMS for Serbia.
This is one of the more successful RMS implementations insofar as the consultants have recognized many of the challenges up front, and put in place sensible approaches to overcome them. The report describes the work to date, surveys, software, etc.
Report describing the urban road management system developed for Shijiazhang.
Transport Notes reviewing the worldwide experience with the PBC approach, highlight the main advantages, the steps involved and the results generated. The document is intended to provide World Bank transport sector staff, Ministries of Transport and road agencies of developing and transition countries with a clear understanding of the benefits, and risks, of applying the PBC approach.
Paper on how the Rural Road Maintenance System is managed in Mozambique
Commencing from the early 1980’s, a number of management systems have been developed in Indonesia to assist govern-ment in the planning, design and imple-mentation of road improvement and main-tenance works.
This short paper provides an overview of all the systems, their components, their areas of application and inter-action between them.
Description of the routine maintenance management system installed for Cambodia by Roughtons.
Results of traffic surveys undertaken as part of the Samoa road management system implementation.
Report by MWH on conducting a location referencing and condition survey in Laos
Report describing the implementation of dROAD for the Thailand Department of Highways
Report describing the conceptual design of a central database for the Thailand Department of Highways.
Report describing the modelling approach based on HDM-4 used to introduce dTIMS to Thailand.
Preliminary Draft Report that discusses the quantification of VOC for use in dTIMS.
The RTIM2 Model was developed by the TRL for economic analysis of rural roads.