【発明の名称】水平方向の道路標識用の複合標識ストリツプおよび該複合標識ストリツプの形成法

Japanese Patent JPH0796764

B2

A road surface marking strip (22) comprises spaced transparent protruding elements containing light-emitting diodes -LEDs- (18), and a photosensitive device (12) located on said strip (22) and adapted to cause, when excited by light from the headlights of an approaching vehicle, switching on of the LEDs (18)-Illumination of the marking strip can also be activated by traffic lights, light from the traffic light being transmitted to the photosensitive device via optical fibres. Retroreflective elements, e.g. catadioptric prisms, alternate on the strip with the LED containing elements. Further the strip is provided with solar converters located thereon and with storage means for the electric energy generated. To better cope with fog conditions, a series of halogen type micro-lamps (20) can be provided on the marking strip (22), in addition to the elements containing the LEDs (18). On the strip a second photosensitive device (14) monitors the light coming from a dedicated LED (16) and causes the fog condition lamps (20) to be switched on when the intensity of the illumination perceived drops below a safe level. To provide a warning of potentially icy road conditions, the surface of the marking strip can contain cholesteric liquid crystals to change color when temperature drops below a certain point, a LED illuminating the warning surface.- Alternatively, the strip can be illuminated by a colored ice alert LED controlled by a temperature sensor.

JP2023169677

TRAFFIC GUIDANCE SYSTEM AND TRAFFIC GUIDANCE METHOD

Ludwig Eigenmann

JP17099286A

October 18, 1995

July 22, 1986

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Minnesota Mining and Manufacturing Company

E01F9/00; E01F9/04; E01F9/08; G01K11/16; G08B19/02; G08G1/04; G08G1/09; G09F13/22; G09F19/22; G09F13/04; (IPC1-7): E01F9/04

JP5745847B2

Akira Asamura (2 outside)

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