Luminous intensity requirements for service vehicle warning beacons

Details

• Personal Author:
  Bullough, John D. ; Rea MS
• Description:
  Flashing yellow warning beacons are used on a wide variety of service vehicles including highway construction vehicles, dump trucks, delivery vehicles, snow plows, and tow trucks. These lights serve as an important line of defense for several million U.S. workers in the transportation, construction and utilities sectors, who are over-represented in terms of workplace fatalities. In order to understand visual responses to warning beacons varying in their luminous intensity characteristics, flashing yellow warning beacons were presented under laboratory conditions simulating daytime and nighttime roadway scenes. Response times to the onset of flashing and subjective ratings of beacon visibility and of the visibility of low-contrast objects in the scenes were measured. The results provide a preliminary basis for the development of quantitative specifications of warning beacon luminous intensity characteristics that ensure high levels of visibility under both daytime and nighttime conditions, while minimizing glare, especially at night. [Description provided by NIOSH]
• Subjects:
  Metals Mining Occupational Health Safety
• Keywords:
  Emergency Lighting Laboratory Testing Light Source Luminescence Motor Vehicle Parts Motor Vehicles Visual Aids Warning Signals
• Publisher:
  Transportation Research Board
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  New York ; OSHA Region 2
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20047006
• Citation:
  Proceedings of the 94th Annual Meeting of the Transportation Research Board, January 11-15, 2015, Washington D.C. Washington, D.C.: Transportation Research Board, 2015 Jan; :15-1117
• Contact Point Address:
  John D. Bullough, Ph.D., Lighting Research Center, Rensselaer Polytechnic Institute, 21 Union Street, Troy, NY 12180
• Email:
  bulloj@rpi.edu
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Transportation, Warehousing and Utilities
• Performing Organization:
  Rensselaer Polytechnic Institute, Troy, New York
• Peer Reviewed:
  False
• Start Date:
  20130901
• Source Full Name:
  Proceedings of the 94th Annual Meeting of the Transportation Research Board, January 11-15, 2015, Washington D.C.
• End Date:
  20180831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:18eff603439a4ab4d82bc85d0af094dbbbc8aff0911fb280f0a1a9b114e43b1e6d8599443954007e5d68528e409352d7972c4750eb5f40803eba248d301d728c
• Download URL:
  https://stacks.cdc.gov/view/cdc/202243/cdc_202243_DS1.pdf
• File Type:
  [PDF - 385.01 KB ]