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Work Zone Traffic Control Delineation for Channelization.

PB91124107

Publication Date	1990
Personal Author	Opiela, K. S.; Knoblauch, R. L.
Page Count	110
Abstract	The report describes a study of the delineation requirements for work zone traffic control. The research included a comprehensive review of past studies and current practices, and an examination of current standards. It was concluded that, in spite of the increasing number of different types of channelizing devices, there appears to be no scientific basis for the spacing criteria for the use of devices for channelization purposes in the taper or tangent sections of a work zone. A laboratory-based testing procedure was used to determine the most appropriate spacing configuration. An interactive video system was used to test subject recognition distances of eight different device types spaced at the standard distance, 1.5 times and 2.0 times the standard distance. Over 240 subjects were tested. The results indicated variability between the performance of most channelizing devices across the spacings tested. Field testing was undertaken at six actual work zones. Right and left closures were used to test the various device-spacing configurations under both day and night conditions. Manual and automated methods were used to gather the field data for traffic approaching a work zone. Recommendations for locating work zones to maximize the sight line on the approach to the taper are presented.
Keywords	Vehicular traffic control Traffic engineering Traffic safety Traffic control devices Channelized intersections Construction site signs Lane closure signs Speed signs Traffic lanes Manual on Uniform Traffic Control Devices(MUTCD)
Source Agency	Federal Highway Administration
NTIS Subject Category	85H - Road Transportation
Corporate Authors	Center for Applied Research, Inc., Great Falls, VA.; Federal Highway Administration, McLean, VA. Office of Safety and Traffic
Supplemental Notes	Sponsored by Federal Highway Administration, McLean, VA. Office of Safety and Traffic Operations Research and Development.
Document Type	Technical Report
Title Note	Final rept. Sep 87-May 90.
NTIS Issue Number	199106
Contract Number	DTFH61-87-C-00025

Work Zone Traffic Control Delineation for Channelization.

Work Zone Traffic Control Delineation for Channelization.
PB91124107

Publication Date	1990
Personal Author	Opiela, K. S.; Knoblauch, R. L.
Page Count	110
Abstract	The report describes a study of the delineation requirements for work zone traffic control. The research included a comprehensive review of past studies and current practices, and an examination of current standards. It was concluded that, in spite of the increasing number of different types of channelizing devices, there appears to be no scientific basis for the spacing criteria for the use of devices for channelization purposes in the taper or tangent sections of a work zone. A laboratory-based testing procedure was used to determine the most appropriate spacing configuration. An interactive video system was used to test subject recognition distances of eight different device types spaced at the standard distance, 1.5 times and 2.0 times the standard distance. Over 240 subjects were tested. The results indicated variability between the performance of most channelizing devices across the spacings tested. Field testing was undertaken at six actual work zones. Right and left closures were used to test the various device-spacing configurations under both day and night conditions. Manual and automated methods were used to gather the field data for traffic approaching a work zone. Recommendations for locating work zones to maximize the sight line on the approach to the taper are presented.
Keywords	Vehicular traffic control Traffic engineering Traffic safety Traffic control devices Channelized intersections Construction site signs Lane closure signs Speed signs Traffic lanes Manual on Uniform Traffic Control Devices(MUTCD)
Source Agency	Federal Highway Administration
NTIS Subject Category	85H - Road Transportation
Corporate Authors	Center for Applied Research, Inc., Great Falls, VA.; Federal Highway Administration, McLean, VA. Office of Safety and Traffic
Supplemental Notes	Sponsored by Federal Highway Administration, McLean, VA. Office of Safety and Traffic Operations Research and Development.
Document Type	Technical Report
Title Note	Final rept. Sep 87-May 90.
NTIS Issue Number	199106
Contract Number	DTFH61-87-C-00025