Method and apparatus for advance warning signalling to a motoris

Details Method and apparatus for advance warning signalling to a motoris Method and apparatus for advance warning signalling to a motoris

1989-02-01

1990-05-15

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340594, 340691, 340584, G08B 1902

Patent

active

049261630

ABSTRACT:
A method and apparatus for advance warning signaling to a motorist of an ice condition on a driving surface. The method steps include mounting a plurality of traffic signalling devices along a driving surface for sensing the prevailing temperatures and thereby continuously signal a motor vehicle operator of the changes in temperature as he approaches a driving surface subject to freezing to permit him to take any necessary precautionary corrective action in driving the motor vehicle. The signalling devices utilize thermostat elements for sensing a narrow temperature range adjacent the freezing temperature and provide visible signals, preferably two colors for signalling a warm or nonhazardous temperature, a cold temperature signalling a frozen driving surface or a combination or mixture of the colored signals to permit the motor vehicle operator to be warned, in advance, as he approaches a driving surface that is becoming colder, leading to a stretch of a driving surface that may be frozen.

REFERENCES:
patent: 2301247 (1942-11-01), Bronee
patent: 2849701 (1958-08-01), Clark
patent: 2902669 (1959-09-01), Lucarelli
patent: 3164820 (1965-01-01), Hulett
patent: 3229271 (1966-01-01), Frant
patent: 3596264 (1971-07-01), Ciemochowski
patent: 3613063 (1971-10-01), Ciemochowski
patent: 3810139 (1974-05-01), Fergusson
patent: 4222044 (1980-09-01), Boschung

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