A decision model to determine the optimal time -cost trade off in highway work zone projects
Highway work zone projects are challenging for state Departments of Transportation and highway contractors due to their unique nature. Such projects are often located in urban areas and impact local traffic, community, environment, and business. The major need faced today in highway work zone projects is to optimize the dynamic relationship and competing interests of the state highway agency, contractor, and road users with respect to the main project performance indicators, i.e., cost, schedule, quality, safety, and user satisfaction while taking the factors that can potentially impact the project into account. ^ This thesis models, at a macro level, the dynamic relationships between the stakeholders to a highway work zone project with respect to their influence on the cost, schedule, safety, quality, and motorist satisfaction through different variable factors commencing from the stakeholders. The research presents a prototype decision support tool for evaluating the trade-offs among cost, schedule, quality, safety, and user satisfaction for highway work zone projects under given constraints and for assisting the highway agencies in developing suitable work zone strategies for any given project.^
Makarand Hastak, Purdue University.