A raised pavement marker is a safety device used on roads.

Some other names for specific types of raised pavement markers include Botts' dots, delineators, cat's eyes, road studs, or road turtles.

In areas with little snowfall, reflective raised pavement markers are applied directly to the road surface rather than being embedded into the surface.

The name delineator is also used for reflective devices attached to other objects which are technically not pavement markers.

The cat's eye is a retroreflective safety device used in road marking and was the first of a range of raised pavement markers.

The earliest patent, first used in "Catseye" brand raised pavement markers, was inspired by the tapetum lucidum of a cat's eye.

It shows all the details a driver needs, like signs with the actual text they will display, pavement markers and side barriers.

Botts' dots are round non-reflective raised pavement markers.

Caltrans engineers may have studied the concept of raised pavement markers as early as 1936.

Raised pavement markers are used to supplement or replace pavement markings.