Method and apparatus for monitoring highway traffic
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United States of America Patent
Stats
-
Oct 10, 1995
Grant Date -
N/A
app pub date -
Feb 14, 1994
filing date -
Feb 14, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A portable traffic warning device identifies hazardous traffic conditions at highway construction sites. The device includes an air hose that actuates a monitor switch whenever a vehicle travels over the air hose. A siren is operably coupled to the monitor switch and is capable of generating a high decibel audible alarm. A portable controller is coupled between the siren and the monitor switch and selectively couples power for preprogrammed amounts of time to the siren after the monitor switch is activated. A spool of retractable wire connects the monitor switch to the controller and allows the air hose to be placed at variable distances from the siren. A portable telescoping pole assembly is used for supporting the siren at variable vertical distances above the ground.
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Cited Art Landscape
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