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:
  Behavior Costs Luminance Temporary Barriers Traffic Channelization Traffic Control Devices Visibility Warning Signals Work Zones
• 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.
  
  
• Format:
  PDF
• Funding:
  BDR74 977-01
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:36fec692ad1322d543a1c8fbb4eea6eee671a0d78395e2ea391b08ae72d1d8cb
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26203/dot_26203_DS1.pdf
• File Type:
  [PDF - 5.07 MB ]