LED traffic signal lamp characteristics : final report.

Gilfert, James C.; Gilfert, Ted A.; Athens Technical Specialists, Inc.

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LED traffic signal lamp characteristics : final report.

2002-05-01
By Gilfert, James C. ; Gilfert, Ted A.

[PDF-2.33 MB]

English

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Details:

Alternative Title:

LED (Light-Emitting Diode) traffic signal lamp (TSL) characteristics : final report;LED traffic signal lamp characteristics, state job no. 14748(0) : final report;
Creators:

Gilfert, James C. ; Gilfert, Ted A.

Gilfert, James C. ; Gilfert, Ted A. Less -
Corporate Creators:

Athens Technical Specialists, Inc.
Corporate Contributors:

Ohio. Dept. of Transportation
Subject/TRT Terms:

[+]

Compatibility Electrical Impedance Evaluation Lamp Tests Light Emitting Diodes Luminance Procedures Signal Lamps Testing Tests Traffic Control Devices Traffic Signal Hardware Traffic Signals
Publication/ Report Number:

FHWA/OH-2002/021
Resource Type:

Tech Report
Geographical Coverage:

Ohio
Edition:

Final report.
Corporate Publisher:

Athens Technical Specialists, Inc.
Abstract:

LED traffic signal lamps are being used to replace incandescent traffic signal lamps because of

the long-term cost saving associated with reduced energy consumption and longer service life. The are reasons to believe that the use of LED traffic signal lamps may compromise of the safety features designed into traffic signal systems that were intended for use with incandescent lamps. The focus of this study .is to analyze the electrical characteristics of LED traffic signal lamp assemblies and determine if they are compatible with exisiting typical traffic signal hardware (load switches and conflict monitors). The as-new state and failed state electrical characteristics of the LED lamps assemblies are measured and analyzed. A testing procedure is established and documented for repeating this analysis on newer models of LED traffic signal lamps in the future.
Format:

PDF
Funding:

State job no. 14748(0)
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:8fa461ed3a4d5af510e11c15e226bed0f78ab0f968d477497e815dfcadd5e39c
Download URL:

https://rosap.ntl.bts.gov/view/dot/15516/dot_15516_DS1.pdf
File Type:

No Additional Files

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LED traffic signal lamp characteristics : final report.

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