The World Road Association Development of HDM-4 Neil Robertson PIARC ISOHDM Project Coordinator

The World Road Association What is HDM-4?

Purpose of HDM-4 The Highway Development and Management System is a decision tool to help you investigate your road investment choices.

Scope of HDM-4 providing, maintaining and upgrading urban and rural roads and highways investigating the effect of vehicles, traffic characteristics, road user costs investigating the social and environmental effects of investments investigating long term issues which arise over asset life cycles.

The World Road Association Supporting Road Investment Decisions

The World Road Association Progress in HDM Technology

The HDM Predecessors

HDM-III Applications Analyse and justify road investments –new works –maintaining existing roads –life cycle economic focus - Benefits and Costs –road assets, demand, work options and costs, user costs Types of analysis –project level - high level design, justification –network level strategies & programs Primarily decision support to Loan Programs In use for more than 10 years

ISOHDM and HDM-4 ISOHDM The International Study of Highway Development and Management Tools is developing HDM-4 The Highway Development and Management System - a road investment analysis system with global application.

The ISOHDM Study Internationally sponsored Objectives –Update the knowledge and technology –user friendly –use in funding agencies & road authority PMS In progress for 7 years –technical studies –software development and testing –software release, support and training PIARC leading the implementation phase

Levels of HDM Technology Knowledge Base Models Software RUE SEE RDWE Models

HDM-4 Product Releases Version 1.0 released February 2000 HDM Series Volumes HDM-4 software Case studies database English, French & Russian editions Version 1.1 update August 2000 major software maintenance release - error fixes Version 1.2 update April 2001 major software maintenance and enhancement release Spanish edition released Version target 2002

HDM Series Collection

HDM-4  HDM-4 is based on a well established economic analysis framework  Models derived from large scale field experiments conducted world-wide  Significant change in scope and software technology from HDM III  International standard tool for road sector planning and management  Provides a common framework for analysis of road management options

What has Changed from HDM-III ? Types of Analysis & Outputs Road Deterioration Models Road User Effects Models Data Dimensions Road works Social and Environmental Effects Models Software HDM-4 is superceding HDM-III

Analysis Tools ProjectProgramStrategy File Converter transfer data to external systems File Converter transfer data to external systems Model libraries can be used in other systems Core Data Vehicle Fleets Road Networks Road Works Projects Programmes Strategies Core Data Vehicle Fleets Road Networks Road Works Projects Programmes Strategies External Systems Databases, PMS, etc. HDM-4 System Architecture RDWE : Road Deterioration and Works Effects RUE : Road User Effects SEE : Safety, Energy and Environmental Effects PMS : Pavement Management System RDWE : Road Deterioration and Works Effects RUE : Road User Effects SEE : Safety, Energy and Environmental Effects PMS : Pavement Management System RUE SEE RDWE Models Road Network Vehicle Fleet HDM Config. Data Managers Road Works

The World Road Association Implementation in 2001

Distribution of Regional Interests

Distribution of Industry Sector Interests

Implementation Growth of user information and services HDM-4 Information Centre Training and dissemination activities User Group and SIG activities ISOHDM / user interactions publications

PIARC HDM-4 on the Web A source of: support information for HDM-4 users how to obtain the products training opportunities user feedback documents download facilities

Training Programs promoting T&D Strategies (country / regional) Asia, Latin America, Africa promoting growth of local training and support services 65 training and dissemination events 31 countries Western & Eastern Europe, North Asia, Middle East, South and Central Africa, South Asia, South East Asia, Oceania, North and South America user information resources training materials local customisation data case studies distance learning activities

Training Achievements

Regional User Groups Must be regionally managed, responding to local needs PIARC ISOHDM will provide support purpose - according to local needs –sharing information Regional meetings local practice guides web site data sharing –local self-help support circles –coordinating calibration efforts –assisting integration and transition efforts –identifying R&D requirements –coordinating interaction with ISOHDM Secretariat

User Support First contact user support Technical user support User community support –user group interactions –user discussion list ( ) –user meetings General information dissemination –HDM-4 web site –PIARC dissemination –publications

HDM-4 Applications

Example Applications Policy & strategy studies –Budget effects of minimum network standards –Allocation for competing needs (eg road classes) –Road use charging for establishing Road Funds –Impact of transport policy on energy consumption Works programming options –applying fixed work standards –economic optimum constrained by budget –program optimised to a network performance standard

Example Applications Project preparation analysis –Selection from design alternatives on life cycle cost maintenance and rehabilitation options widening and geometric improvement options pavement upgrading and new construction –economic justification of project proposal Research Studies –Network implications of new vehicles –Network impact of axle load limits –Effectiveness of alternative road maintenance practices –Impact of maintenance and rehabilitation standards

Policy Formulation Road pricing –fuel levies –congestion charges –weight-distance charges Vehicle regulations –axle load limits –energy consumption, vehicle emissions & noise Engineering Standards –sustainable road network size –pavement design and maintenance standards

HDM-4 Applications Road sector policy studies Strategic planning of road network development, maintenance and funding requirements Optimal allocation of funds to competing needs Formulation of national road sector funding programmes Economic appraisal of individual road projects Research studies

Analytical Framework Predicts road network performance as a function of: –Traffic volumes and loading –Road pavement strength –Maintenance standards Quantifies benefits to road users from: –Savings in vehicle operating costs (VOC) –Reduced road user travel times –Decrease in number of accidents –Environmental effects

Project Level Outputs Road condition indicators Road user cost details Energy & emissions Economic indicators Sensitivity analysis results Scenario analysis

Multi-year programme RankRoad SectionkmDistrictWork TypeYear $m  $m 1N Resealing N Overlay 40mm N Reconstruct R Widen 4 lane R Overlay 60mm ::: ::::: 1N Reconstruct R Overlay 40mm N Widen 4 lane ::: ::::: 1N Resealing N Overlay 60mm F Reconstruct ::: :::::

Network Condition Forecasts Effect of funding levels on network performance Feeder Roads $30m/yr Secondary Roads $35m/yr Trunk Roads $20m/yr

Effect of budget levels 100% 80% 50% Annual Budget Target

Optimal budget requirements

The World Road Association What is HDM-4 capable of?

Features of HDM-4 Road Deterioration & Works Effects Models for current practice: –bituminous concrete –cement concrete –granular –stabilised –unpaved Road User Effects Models –motorised & non- motorised traffic effects –wide range of vehicle types –vehicle operating costs –time costs –congestion effects

Features of HDM-4 Safety, Environment & Energy Models –accident costs –emission effects –total energy balance Customise to local requirements –calibrate models to local experience –establish local default data settings –define aggregate data classes –localise reports

Features of HDM-4 Assess the worth of road investments –life cycle analysis –economic return –total energy balance Spectrum of applications –broad policy studies –works programming –detailed project studies –research studies Spectrum of extent –road networks –single section

Features of HDM-4 User interface –Familiar and intuitive (Win95/98/NT) –Data management functions –User-definable reports and standard templates User documents –overview –applications –software –technical –calibration

The HDM-4 Products HDM-4 software on CD ROM Case study data sets HDM Series documents