Road-side reflector network (Reflective Marker Network), established through optically coupling of individual roadside markers / reflectors. Each individual roadside marker acts as a light collector and reflector; partly reflecting the light and partly transmitting the light through optical coupling (e.g. optical fibres) to other roadside markers. The proportion of transmitted light can be anything from 0 to 100% of the incident light, the proportion of reflected light being the remainder of the total incident light. Any coupling distribution is possible, thereby theoretically extending the distance over which the roadside markers are lit-up to infinity, and far beyond the reach of conventional, non- coupled road side markers, where the distance is limited to the range of a car's head light.
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