00983271

Component

https://doi.org/10.3141/1877-07

http://scholar.google.com...rner&publication_year=2004

A comprehensive set of data on work zone exposure characteristics does not exist at the national level. Without accurate work zone exposure data, it is impossible to know whether changes in work zone performance measures (safety, congestion, public sentiment) over time are due to true changes in the characteristics of work zones or to changes in external factors. Presented are the results of a study exploring the quality and quantity of work zone data available in the United States. During this study, researchers collected data in five regions across the country. The regional data were then extrapolated to develop national estimates of several work zone exposure characteristics on the National Highway System (NHS) during 2001. Researchers examined construction-management databases, traffic control plans, and project-inspector diaries on projects performed by private contractors in these regions during 2001. Researchers also gathered data on work zone activities that were performed directly by transportation agency in-house personnel in each of the regions. These data were then extrapolated to national estimates of several work zone exposure measures during the 2001 calendar year, including the percentage of NHS that experienced at least 1 day of work zone activity in 2001; length, duration, and frequency of activity in work zones on the NHS; impacts of work zones on available NHS roadway capacity; and vehicle exposure to active and inactive work zones on NHS during the year.

This paper appears in Transportation Research Record No. 1877, Maintenance Management and Services.

00983264

English

p. 62-68

2004

Transportation Research Record

0309094739

References (3) ; Tables (7)

Data collection; Extrapolation; Regions; Work zones

National Highway System

National estimates

United States

Highways; Maintenance and Preservation; Operations and Traffic Management; Safety and Human Factors; I60: Maintenance; I73: Traffic Control

TRIS, TRB, ATRI

Dec 9 2004 12:00AM

• DETERMINING DESIGN WIND LOADS FOR WORK ZONE TRAFFIC-CONTROL DEVICES
• EVALUATION OF AUTOMATED WORK ZONE INFORMATION SYSTEMS
• EVALUATION OF INTERSTATE HIGHWAY CAPACITY FOR SHORT-TERM WORK ZONE LANE CLOSURES
• HIGHWAY MAINTENANCE OUTSOURCING EXPERIENCE: SYNOPSIS OF WASHINGTON STATE DEPARTMENT OF TRANSPORTATION'S REVIEW
• IMPLEMENTING HIGHWAY PREVENTIVE MAINTENANCE: COMPARING CHALLENGES, PROCESSES, AND SOLUTIONS IN THREE STATES
• INJURY SEVERITY AND TOTAL HARM IN TRUCK-INVOLVED WORK ZONE CRASHES
• MODEL TO ANALYZE THE EFFECTIVENESS OF HIGHWAY REST AREA PERFORMANCE
• OPTIMAL DYNAMIC SPEED-LIMIT CONTROL FOR HIGHWAY WORK ZONE OPERATIONS
• PERFORMANCE EVALUATION OF PAVEMENT MARKINGS UNDER DRY, WET, AND RAINY CONDITIONS IN THE FIELD
• PILOT STUDY OF SPEED-RECOVERY DURATION AS A MEASURE OF WINTER MAINTENANCE PERFORMANCE
• PREDICTION OF BRINE APPLICATION FOR PRETREATMENT AND ANTI-ICING
• SAFETY IMPLICATIONS OF FREEWAY WORK ZONE LANE CLOSURES
• TRAFFIC-SIGNAL GROUP RELAMPING MODEL
• WORK ZONE OPTIMIZATION FOR TWO-LANE HIGHWAY MAINTENANCE PROJECTS