This is a concrete road edge barrier spline as used in Australia, set at a height to suit the road edge, but can be raised or lowered to any level required and bent to a suitable shape.
It has a width of paved shoulder that allows it to merge with a paved road surface. The hazard lights show up at night and are white in both directions,to suit driving on the left or right.
It matches the barrier on Road Concrete Bridge3, (kuid 60238:38071) and can be placed to align with it.