Marcel Lavigne, Vice President Business Development November 22nd, 2013 Perth, Australia Deighton Associates Limited The benefits of good pavement management

Recent history of Pavement Management Evolution in recent years Impact on PMS Why use a PMS? Prioritization vs Optimization Why not use optimization? Tools available Conclusion Agenda

A quick peek at history

Source: Ralph Haas, 2001 Milestones: Pavement Management

Processing power: X 1000 Source: Wikipedia, Author WGSimon

Processing speed X 500

Impact on Pavement Management Automated data collection Development of high-performance PMS Increased complexity of analysis scenarios More powerful algorithms and models Faster processing of metadata Quicker analysis Faster outputs Optimization of analysis

Why use a PMS? Ability to manage large networks Share and exchange information More objective look at alternatives Access to historical and actual data as well as projections Capability of managing assets through their life cycle Ease to produce “what ifs” Easily produce reports

Why use a PMS?

Life Cycle Cost Analysis

Definition: – Optimization chooses the strategies that maximise the outcome, defined by the user, while adhering to a set of constraints such as budget or minimum level of service. It can be defined as a tool within a good Pavement Management System that provides you with quantitative feedback and suggestions, ultimately allowing you to knowingly revise a program by using your judgment to weigh political, engineering and economic factors. Optimization

Prioritization = Ranking Limitations of ranking: – What is vs What will be – Insufficient focus on impact to overall network – Does not deal with time scale – May result from subjective selection rules – Does not address capacity vs demand issues Ranking = Worst first Optimization vs Prioritization

Prioritisation: Ranking vs dTIMS Optimisation CapabilityRankingOptimisation Engineering judgement Decision tree Performance modelling Alternative options Life cycle costing Economics (BCR) Network level performance Simplicity Tactical analysis Strategic analysis Source: P. Kadar, ARRB

Optimization vs Prioritization

Source: T. Henning, NZTA, 2013 COSTS OVER 20 YEARS: OPTIMIZED= 80% OF RANKING COSTS

dTIMS: A strategic planning tool Your chance to shape the future dTIMS is a Strategic Level tool It models the performance of your assets It provides clarity WRT your options Over a long time/traffic In respect of your constraints (budget, LOS, risk levels, etc.) Evaluates thousands of potential maintenance strategies Recommends the strategies with the highest ROI (meeting your constraints)

"There should be a desire for change by skillful professionals who can make a difference in the way decisions are made and which will result in reduced costs and improved performance," said Dr. Tom Larson, a former FHWA administrator, as part of his remarks at the 1985 International Conference on Pavement Management. He pointed out that "without dollars there will be no need for pavement management and without good management there will not be enough dollars to go around." Conclusion