Citation

Evans A. IMSA J. 2005; 43(4): 2 p..

Copyright

(Copyright © 2005, International Municipal Signal Association)

DOI

unavailable

PMID

unavailable

Abstract

This article gives an overview of advancements in solar powered flashing traffic beacon technology. It relates how over the past two years they have become a true competitor to hardwired systems, particularly in terms of appearance. The article focuses on the primary components of solar beacon systems, such as solar panels, batteries, control circuitry, and intelligent software. In regard to solar panels, the article discusses how the use of crystalline solar cells has nearly tripled the output from previously used amorphous type solar cells. Additionally, the use of high voltage/low amperage solar panels that dont require large solar collection surfaces facing south can be placed on top of beacons where they are not very visible. Modern battery systems now are more compact, have longer life cycles, and are housed heavily insulated boxes with cooling plates. The size of circuit boards has decreased, making them less prone to vandalism. Finally, intelligent or smart software that can adjust power levels, light intensity, flash duration, and self-adapt to any condition has enabled solar powered traffic beacons to have a competitive edge.