what are their uses on road?
When the headlights of a car illuminate a retroreflective surface, the reflected light is directed towards the car and its driver.
Retroreflector
 When the headlights of a car illuminate a retroreflective surface, the reflected light is directed towards the car and its driver (rather than in all directions as with diffuse reflection).
where did the term 9 lives come from It is a myth in many cultures, cats have multiple lives as they exhibit the natural suppleness and swiftness to escape life-threatening situations. how are they classified? The domestic cat is regarded as a distinct species, "Felis catus". can they see in darkness? Yes, they have excellent night vision. what helps them do so? This is partly the result of cat eyes having a tapetum lucidum. what is it? It is a layer of tissue in the eye of many vertebrates. is it used by humans? Humans use scanning for reflected eyeshine to detect and identify the species of animals in the dark, and deploying trained search dogs and search horses at night. is there any artificial form of it? Yes, manufactured retroreflectors modeled after a tapetum lucidum are described in numerous patents and today have many uses.
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Retroreflector [SEP] On roads
Retroreflection (sometimes called retroflection) is used on road surfaces, road signs, vehicles, and clothing (large parts of the surface of special safety clothing, less on regular coats). When the headlights of a car illuminate a retroreflective surface, the reflected light is directed towards the car and its driver (rather than in all directions as with diffuse reflection). However, a pedestrian can see retroreflective surfaces in the dark only if there is a light source directly between them and the reflector (e.g., via a flashlight they carry) or directly behind them (e.g., via a car approaching from behind). "Cat's eyes" are a particular type of retroreflector embedded in the road surface and are used mostly in the UK and parts of the United States.