What is the significance of cat's eyes - reflective road studs - when placed close together

Question

Well I kind of do know what they are and the function they serve ....... but wanted to know in which circumstances one would find them placed closer together than normal ... road junctions eh?

Answer 1

The cat's eye is a retro-reflective safety device used in road construction and was the first of a range of raised pavement markers..

This is the kind that marks the center of the road, with one pair of cat's eye showing in each direction.

A single-ended form has become widely used in other colors at road margins and as lane dividers.

Cat's eyes are particularly valuable in fog and have proven to be remarkably resistant to snow plough damage.  

Answer 2

Road junctions.

Answer 3

so u can see in the dark while driving.

Answer 4

You've answered your own question, haven't you.