Orange traffic markers (5)
I believe the answer is:
cones
'orange traffic markers' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cones that I've seen before include "They taper from a circular base to a point" , "Cornets" , "Round shapes with tapering sides" , "Shapes of wafers for ice-cream" , "Shapes with circular base and tapering sides" .)