Cat's eyes on the motorway are actually tiny little reflectors inset into the pavement to reflect the car's headlights back at the driver. They are called that because they reflect light back just the way eyes of real cats do; if a cat is looking at you, and you shine a light at it, the cat's eyes will reflect the light back.
The main thing that cats eyes on the motorway do is provide a clearer indication of where the motorway lines are. The reflection from a cats eye embedded in the road is much more visible than the line painted on the road and can be seen at a much greater distance.
Cats eyes of different colours give the driver lane separation, and early warning of slip roads, hard shoulders, median edge, danger areas etc
Amber/yellow cat's eyes mark the entrance of a motorway.
Cats eyes are used on a motorway to serve as a retroreflective safety device and as road markings. Amber cats eyes, in particular are used in the United Kingdom and Hong Kong and are placed along the edge of the central reservation.
red
Depends if they've been hit yet...:-*
All red
Cats eyes expand at night because They are bringing in more light to see into their eyes
They have reflective eyes which (unlike humans) does not blind them
White cat's eyes separate lanes, amber ones mark the offside (right) and red the nearside (left) of a Motorway. Green cats eyes warn of exit or entrance slip roads.
Green studs are on the slip loads. Entrance & ExitsRed studs are on hard shoulder.White studs between lanesAmber studs at central reservation.
The special layers of cells that are located in the back of a cats eyes improve the cats night vision. Cats are able to see far better than humans at night.
'Cats Eyes'
Yes, Cats eyes, are 'cats eyes' although their eyes aren't the same as maybe the marble 'cats eye', only in bright light- i suppose they are just eyes though