Method and apparatus for monitoring highway traffic

Details Method and apparatus for monitoring highway traffic Method and apparatus for monitoring highway traffic

1994-02-14

1995-10-10

Crosland, Donnie L.

Communications: electrical

Traffic control indicator

Portable

3409081, 340905, 340933, 340940, G03G 1095

Patent

active

054574498

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.

REFERENCES:
patent: 3060406 (1962-10-01), Wright
patent: 3729706 (1973-04-01), Hein

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