01099142

Component

https://doi.org/10.3141/2055-04

http://scholar.google.com...deen&publication_year=2008

A step-by-step methodology for computing delays and user costs in highway work zones is presented in this paper. The methodology is based on the relationship between speed and capacity in work zones. Speed is adjusted to account for the adverse effects of roadway geometrics, work intensity, speed enforcement, and other work zone factors. Speed reductions for work intensity and narrow lane widths were determined previously by use of data from work zones. Values from the "Highway Capacity Manual" were used where data from work zones were not available. The fundamental difference between this methodology and previous approaches is that it accounts for the various work zone factors. Two applications of the methodology are presented, one with queuing and one without queuing, to real-world work zones. Results are compared with field data. For the nonqueuing site, the computed speed and capacity were 44.4 mph and 1,778 vehicles per hour per lane (vphpl), respectively, while the field speed and capacity were 44 mph and 1,708 vphpl, respectively. For the queuing site, computed capacity was 1,012 vphpl while the field capacity was 1,220 vphpl. Considering the assumptions made in the methodology for some of the parameters, these results build confidence in the methodology. Extensive validation of this methodology is strongly recommended.

01114242

English

pp 31-38

2008

Transportation Research Record: Journal of the Transportation Research Board

9780309113250

Print

Figures (2) ; References (13) ; Tables (4)

Highway capacity; Methodology; Traffic delays; Traffic queuing; Traffic speed; Work zone traffic control; Work zones

Highway user costs

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

TRIS, TRB, ATRI

Jan 29 2008 4:48PM

• Application of Road Visibility Information System to Winter Maintenance
• Automated Speed Photo Enforcement Effects on Speeds in Work Zones
• Benefit–Cost Analysis of Weather Information for Winter Maintenance: A Case Study
• Current Asset Management Practices Applied to Pavement Markings
• Decision Tree for Pretreatments for Winter Maintenance
• Development of New Performance Measure for Winter Maintenance by Using Vehicle Speed Data
• Development of Traffic Delay Assessment Tool for Short-Term Closures on Urban Freeways
• Dynamic Late Lane Merge System at Freeway Construction Work Zones
• Effects of Adverse Weather on Traffic Crashes: Systematic Review and Meta-Analysis
• Implementing Semipermanent High-Mast Lighting for Highway Construction Projects
• Pavement Marking Retroreflectivity Inspection Data: A Weibull Analysis
• Performance Evaluation of Semipermanent High-Mast Lighting for Highway Construction Projects
• Recycling of Salt-Contaminated Storm Water Runoff for Brine Production at Virginia Department of Transportation Road-Salt Storage Facilities
• Review and Development of Recommended Minimum Pavement Marking Retroreflectivity Levels
• Scheduling Work Zones for Highway Maintenance Projects: Considering a Discrete Time–Cost Relation