LED traffic signal lamp characteristics : executive summary.

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

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LED traffic signal lamp characteristics : executive summary.

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

[PDF-51.14 KB]

English

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Details:

Alternative Title:

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

Executive summary.
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:sha256:447c8d7d01edf593bb52bda0abc7455a2e2cf84f2b190deb1e093ee677800ca4
Download URL:

https://rosap.ntl.bts.gov/view/dot/17584/dot_17584_DS1.pdf
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No Additional Files

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LED traffic signal lamp characteristics : executive summary.

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