Assessing Signal Timing Plans for Winter Conditions

This paper presents findings from the automated collection of high-resolution signal controller data and Bluetooth® probe vehicle travel times to characterize both the microscopic and macroscopic operation of a four-intersection signalized arterial during winter weather conditions (snow and ice on pavement), as well as clear pavement conditions. An 83-second increase in median travel time through the system was measured during winter conditions. Platoon shifts of 15, 25, and 30 seconds were measured at three intersection links that corresponded to an approximate reduction in design speed of 7 to 11 miles per hour (mph) on a corridor with a posted speed of 55 mph. Alternative offsets were calculated that showed an opportunity to decrease overall vehicle delay by 26.7 percent for southbound vehicles during the a.m. peak snow event.

• Record URL:
  • http://trid.trb.org/includes/getfile.aspx?subdir=\&f=High-Res%20PDF.pdf
• 
• Supplemental Notes:
  • Abstract used with permission by the publisher
• Authors:
  • Brennan Jr, Thomas M
  • Day, Christopher M
  • Wasson, Jason S
  • Sturdevant, James R
  • Bullock, Darcy M
• Publication Date: 2011-3

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 59-76
• Serial:
  • Journal of Transportation of the Institute of Transportation Engineers
  • Volume: 1
  • Issue Number: 1
  • Publisher: Institute of Transportation Engineers (ITE)
  • Serial URL: http://www.ite.org/jot/

Subject/Index Terms

• TRT Terms: Bluetooth technology; Data collection; Optimization; Traffic platooning; Traffic signal controllers; Traffic signal timing; Weather conditions; Winter
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01345214
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Jul 20 2011 7:27AM