Self De-Icing LED Signals

This proposed project will develop multiple prototypes of a new type of self de-icing LED signals for highway signalized intersections and railroad signaling applications and validate them using the field tests. The innovative concept -- "Heated Lens Lighting Arrangement" -- was thoroughly tested in 2014. A non-provisional patent application (No. PCT/US14/53503) was filed on Aug 29, 2014. The self de-icing LED signal light is aimed to solve a well-known problem of the existing LED signal light that does not generate sufficient heat in the forward direction towards the lens of the signal necessary to melt snow and ice. Snow and ice can easily accumulate on the lens within the signal hood in wintery conditions and block light to the drivers of vehicles or locomotive engineers. This can decrease the performance of signalized intersections and railroads and also result in collisions in inclement weather conditions. This is a problem in the snowy regions in North America for which a viable retrofit has not been developed or tested.

• Record URL:
  http://www.pooledfund.org/Details/Study/602

Language

• English

Project

• Status: Completed
• Funding: $360000
• Contract Numbers:

  TPF-5(351)

• Sponsor Organizations:

  Maryland Department of Transportation State Highway Administration

  707 N. Calvert Street
  Baltimore, MD  United States  21202

  Kansas Department of Transportation

  Eisenhower State Office Building
  700 SW Harrison Street
  Topeka, KS  United States  66603-3754

  Pennsylvania Department of Transportation

  Keystone Building
  400 North Street
  Harrisburg, PA  United States  17120

  Wisconsin Department of Transportation

  PO Box 7910
  4802 Sheboygan Avenue, Room 104
  Madison, WI  United States  53707-7910

  California Department of Transportation

  1227 O Street
  Sacramento, CA  United States  95814

  Michigan Department of Transportation

  Van Wagoner Building
  425 W. Ottawa Street
  Lansing, MI  United States  48909

  New Jersey Department of Transportation

  1035 Parkway Avenue
  Trenton, NJ  United States  08625
• Project Managers:

  Behzadpour, David

• Start Date: 20160814
• Expected Completion Date: 0
• Actual Completion Date: 20190814
• Source Data: RiP Project 42339

Subject/Index Terms

• TRT Terms: At grade intersections; Deicing; Field tests; Light emitting diodes; Prototypes; Railroad signals; Signalized intersections; Validation
• Subject Areas: Highways; Maintenance and Preservation; Operations and Traffic Management; Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 01666435
• Record Type: Research project
• Source Agency: Federal Highway Administration
• Contract Numbers: TPF-5(351)
• Files: RIP, USDOT, STATEDOT
• Created Date: Apr 22 2018 2:08PM