Roadside barrier marker system

Details Roadside barrier marker system Roadside barrier marker system

1977-12-02

1978-10-31

Byers, Jr., Nile C.

Road structure, process, or apparatus

Traffic director

350103, 404 16, E01F 900

Patent

active

041231813

ABSTRACT:
An improved roadside marker system wherein each individual reflector means is continuously visible by the driver of a vehicle moving along the roads surface at night-time from an angle of 0.degree. to 60.degree. where 0.degree. extends substantially parallelly to a tangent to the road side portion in the region where each respective one of the reflector means is located. Also, such driver continuously sees retroreflected light at any given instant of time while approaching and passing a group of the reflector means so employed and so located.

REFERENCES:
patent: 2318722 (1943-05-01), Smith
patent: 2329171 (1943-09-01), Russ
patent: 2330096 (1943-09-01), Waters
patent: 3179009 (1965-04-01), Sheffield
patent: 3485148 (1969-12-01), Heenan
patent: 3540282 (1970-11-01), Kohler
patent: 3901614 (1975-08-01), Overacker
patent: 3905679 (1975-09-01), Langenbach
patent: 3905680 (1975-09-01), Nagel
patent: 3905681 (1975-09-01), Nagel
patent: 4035059 (1977-07-01), DeMaster

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