Overview
This document provides guidance on work zone performance measurement, including data source identification, selection of performance measures, and data collection, assessment, and application (computational methods). In the context of highway work zones, there are three major data needs for performance measurement:
- Performance data (“how much” a work zone affects travelers, the agency, and/or contractor)
- Exposure data (“who” or “what” are being affected)
- Work zone indicator or stratification data (“when” or “where” the effects are occurring)
The document is primarily organized by category of work zone performance: mobility, safety, customer satisfaction, and agency and contractor efficiency and productivity. Each of these can be further subdivided into subcategories of specific performance measures. Recommendations and applications are provided. Discussion of accessing the data to support these measures includes extraction from existing sources, collection, or interpolation or estimation.