Traffic Analysis Tools Volume IX: Work Zone Modeling and Simulation
A Guide for Analysts

Figure 2 Work Zone Decision-Making Process

On the left is the project life-cycle as described by FHWA in the publication Impacts Assessment: An Approach to Assess and Manage Work Zone Safety and Mobility Impacts of Road Projects. On the right are three categories of a simplified work zone decision-making process consisting of planning which leads into PE/Design which leads into construction. Three arrows lead from the FHWA framework to the Work Zone framework. The first leads from System Planning (STIP/TIP) to planning. The second leads from Project Development to PE/Design. The third leads from Construction/Implementation to construction.

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