Federal regulations require police, fire and ems personnel to carry 28-inch traffic cones on their vehicles and storing the 28-inch traffice cone has been made easier with Pop UP cones. Pop Up cones fold down to 2 1/2 inches high and stack up to four in a hnady carry pack. The cones are road worhty and willnot blow over in traffic conditions. The cones offered through Tri Industries exceed DOT standars and can be equipped with an optinal LED light that can flash or remain on steady for night safety. Each cone also comes standard with two reflective bands for even more safety. All this protection in a one cubic foot bag.