00727284

Component

https://doi.org/10.3141/1529-04

http://scholar.google.com...ider&publication_year=1996

Work zone capacity values for rural and urban freeways without continuous frontage roads were defined and determined. Data were collected using Nu-Metrics counters and classifiers at 24 work zones in North Carolina. The research included analysis of speed-flow behavior, evaluation of work zone sites based on lane configuration and site location, and determination of the location within the work zone where capacity is lowest. It was shown that the intensity of work activity and the type of study site (rural or urban) strongly affected work zone capacity. The data suggested that the location where capacity is reached is also variable based on the intensity of work. For heavy work in a two-lane to one-lane work zone configuration, the capacity values proposed at the active work area are approximately 1,200 vehicles per hour per lane for rural sites and 1,500 vehicles per hour per lane for urban sites. It is recommended that two distinct volumes be used when queue behavior in a freeway work zone is analyzed. The collapse from uninterrupted flow (designated work zone capacity) and the lower queue-discharge volume both should be considered.

This paper appears in Transportation Research Record No. 1529, Work Zone Safety and Pavement Markings and Materials.

English

p. 27-34

1996

Transportation Research Record

0309059011

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

Construction sites; Freeways; Highway capacity; Rural highways; Urban areas

North Carolina

North Carolina

Highways; Maintenance and Preservation; Operations and Traffic Management; Planning and Forecasting; I60: Maintenance; I72: Traffic and Transport Planning

TRIS, TRB

Oct 15 1996 12:00AM

• ANALYSIS OF CRASH RATES AT INTERSTATE WORK ZONES IN INDIANA
• CRACK SEALING IN FLEXIBLE PAVEMENTS: A LIFE-CYCLE COST ANALYSIS
• DEVELOPMENT OF WORK ZONE LIGHTING STANDARDS FOR NIGHTTIME HIGHWAY WORK
• EVALUATION OF COLD MIXES FOR WINTER POTHOLE REPAIR
• EVALUATION OF CROSSOVER AND PARTIAL LANE CLOSURE STRATEGIES FOR INTERSTATE WORK ZONES IN INDIANA
• FIELD TEST OF A PORTABLE RETROREFLECTOMETER FOR RETROREFLECTIVE RAISED PAVEMENT MARKERS
• INVESTIGATION OF HIGHWAY WORK ZONE CRASHES: WHAT WE KNOW AND WHAT WE DON'T KNOW
• PAVEMENT MARKING RETROREFLECTIVITY REQUIREMENTS FOR OLDER DRIVERS
• QUEUING AND NATURAL DIVERSION AT SHORT-TERM FREEWAY WORK ZONE LANE CLOSURES
• STRAIN AND AGE EFFECTS ON BEHAVIOR OF A CONCRETE PAVEMENT JOINT SEALANT MATERIAL
• TRAFFIC CONTROL AT FLAGGER-OPERATED WORK ZONES ON TWO-LANE ROADS