Evaluation of warning lights on maintenance of traffic devices and development of possible alternatives.

Details

• Creators:
  Theiss, LuAnn ; Miles, Jeffrey D. ; Pratt, Michael P. ; Ye, Fan ; Ullman, Gerald L.
• Corporate Creators:
  Texas A&M Transportation Institute
• Subject/TRT Terms:
  • Warning signals
  • Traffic control devices
  • Work zones
  • Traffic channelization
  • Visibility
  • Temporary barriers
  • Costs
  • Behavior
  • Luminance
• Publication/ Report Number:
  TTI Final Report 478660
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION ; NTL-SAFETY AND SECURITY-Highway Safety ; NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control Devices
• Abstract:
  This report documents the efforts and results of a number of studies and evaluations performed by TTI ; researchers to evaluate the effect and value of steady-burn warning lights on temporary traffic control ; devices used to delineate the correct travel path in work zones The effort also included a study of steadyburn ; warning lights on temporary barrier walls relative to the potential use of delineators currently used on ; permanent barrier wall. The research includes an assessment of the potential incremental increase in ; luminance (and benefit of that increase to drivers) during vulnerable driving conditions. These conditions ; include periods of heavy fog, periods when dew has formed on the reflective sheeting on channelizing ; devices, periods when dirt and grime have accumulated on the channelizing device, and when channelizing ; devices are viewed by drivers of large trucks who have a larger observation angle between their eye and the ; vehicle headlights that are illuminating the reflective sheeting. The researchers assessed the effect of ; warning light misalignment upon its apparent luminance to drivers, as well as the effect of providing steadyburn ; warning lights on channelizing devices and temporary barrier walls upon driver visual glance behavior, ; driving behavior, and driver opinions. Finally, the researchers performed an assessment of the costs of ; providing steady-burn warning lights and the necessary improvements in work zone safety that would need ; to be achieved in order to offset those costs. Based on the findings, the researchers recommended that the ; statewide application of steady-burn warning lights in all work zones be discontinued.
  More +
• Format:
  PDF
• Funding:
  BDR74 977-01
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26203/dot_26203_DS1.pdf
• File Type:
  [PDF - 5.07 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4c48d0c98a22236a6f2fcb7b37a242e8c9137d9b8b2d0fff37221be0483c5a90dd254dacfdeb89735afdb0a52eba8af0a908fe959ece354acbbf5e09c00981f3