Reflective highway marker

Details Reflective highway marker Reflective highway marker

1980-08-18

1983-07-26

Novosad, Stephen J.

Road structure, process, or apparatus

Traffic director

350103, E01F 904

Patent

active

043951554

ABSTRACT:
A reflective highway marker mounted within an elongated groove formed in a highway pavement, the groove extending longitudinally of the highway and exposing the reflective highway marker to the headlights of oncoming motor vehicles when their approach distance from the reflective highway marker is adequate for highway guidance purposes. The reflective highway marker is provided with a reflective surface which is slightly inclined from the vertical and oriented to reflect back to the eye level of the average driver of an average vehicle a beam of light which emanates from the level of the average headlight on an average vehicle. The elongated groove is substantially narrower than the width of the narrowest motor vehicle tires conventionally in use to prevent destructive contact between the tires and the reflective highway marker.

REFERENCES:
patent: 1981206 (1934-11-01), Strauss
patent: 2329171 (1943-09-01), Russ
patent: 2848597 (1958-08-01), Knottnerus
patent: 3332327 (1967-07-01), Heenan
patent: 3544959 (1967-12-01), Hawks
patent: 3575773 (1971-04-01), Courtot
patent: 3703855 (1972-11-01), Converso
patent: 3836226 (1974-09-01), Cechetini
patent: 3996556 (1976-12-01), Eigenmann
patent: 4136990 (1979-01-01), Morgan
patent: 4174184 (1979-11-01), Heenan
patent: 4224002 (1980-09-01), Heenan et al.
Botts-Line Incorporated "Optical Laws and Botts-dots Traffic Markers" Sep. 1963-p. 3, FIG. 4 & FIG. 5.

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