![]() Manufacturers and distributors said there is no exact figure on the number of cones stolen annually, but they estimate at least a million. ![]() On the other hand, he still sees cones on the road with the name “Kelch” on them, the Cedarburg, Wis., corporation his company bought out 15 years ago. “It depends on when the cone is set down and when the first semi driver decides to run over it,” Cuttill said. The heavier cones are used on freeways to withstand the wash of wind from passing vehicles.Ĭones can last anywhere from minutes to decades. The 18-inch cone, most often seen at road construction projects, can weigh 7 pounds or 10 pounds. The sizes used most are 12, 18 and 28 inches high. All of the sleeves are manufactured by 3M Corp.Ĭones range in size from 5 inches tall-typically used by police departments to mark evidence at a crime scene-to about 42 inches high. Cones used at night, for instance, must have two florescent white sleeves, one 6 inches and one 4 inches in width. Standards for the color, shape and size of the cones are set down in a federal manual for uniform traffic control devices. A cone connoisseur can distinguish a Radiator cone made in the South by its black base, as opposed to the California product with an orange base, Lucas said.ĭespite such esoteric differences, most traffic cones look alike. The cones she sells are manufactured by Radiator Specialty in North Carolina, which also has a plant in Napa, Calif. The California Department of Transportation alone purchases about 50,000 cones a year, Lucas said. ![]()
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