AHS™ Research Findings


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The Automated Horn System™ is the only tested Wayside Horn.

The Automated Horn System has been studied since 1995. The initial study was conducted by John A. Volpe National Transportation Systems Center for the United States Department of Transportation. Since then studies have been conducted by the Iowa Department of Transportation, Association of American Railroads, Texas Transportation Institute, Northwestern Univerity Center for Public Safety and the City of Richardson, TX.

The research has proven the Automated Horn System™ to be an effective solution for mitigating noise pollution and improving driver safety.


AHS™ Study Conclusions:

“The results from the evaluation show a significant 70% decrease in violations of highway-rail crossing law iwh the AHS. Noise levels in areas near the tracks decreased by up to 85%.” -Evaluation of the Automated Wayside Horn System in Mundelein, Illinois Final Report, by Northwestern University Center for Public Safety, January 2003

“For nearby residents, the automated horn system greatly reduces the negative impacts resulting from the loud train horns; the automated horns are well accepted by both motorists and locomotive engineers...” -Evaluation of an Automated Horn Warning System at Three Highway-Railroad Grade Crossings in Ames, Iowa, by Steve Gent, P.E. (Iowa DOT), Scott Logan, P.E.(City of Ames Iowa), David Evans (Iowa State University), 1998

“The AHS appears to be, after almost 5 years of operation, an effective alternative to the locomotive horn at the Tenth Street crossing in Gering, Nebraska...” -A Safety Evaluation of the Automated Horn System™, by Stephen S. Roop, Ph.D. Texas Transportation Institute, May 2000

Our AHS™ is the only Tested and Proven Wayside Horn System!!

Studies for Download

Where From Download
Analysis of an AHS™ in Nebraska Nebraska
Evaluation of an Automated Horn System™ at Three Crossings in Ames, Iowa Iowa
Evaluation of the Automated Horn System™ in Mundelein, IL Illinois