What is the scientific name of the triangular piles used to maintain traffic on the road?

Traffic cones, also known as cone-shaped road signs, cones, red hats, obelisks, commonly known as ice cream cones, are a kind of road traffic isolation and warning facilities. Implement the transportation industry standard JT/T595-2004 "Conical Traffic Signs".

The three-dimensional traffic cone is a cone-shaped road sign with a regular hexagonal cross-section, weighing up to 4500g, and is a utility model patented product.

The obelisk traffic cone is similar to a monument in appearance, with a regular quadrilateral cross-section, and is pressed by a PVC mold.

Rubber traffic cones, made of black or white glue.