Traffic cones, also known as traffic cones, road marking cones, and ice cream cones (commonly known in Hong Kong), commonly known as road cones, triangular cones, are generally conical or cylindrical temporary road markings, and are generally used to carry out works and remind when accidents occur Use passers-by to ensure the personal safety of engineering personnel and road users, or to separate or merge traffic diversions, pedestrian flows, and vehicle groups. But in other cases, daily traffic separation/convergence will use "permanent" road signs/signs that are less portable.
The earliest traffic cones can be traced back to the concrete traffic cones made by Charles P. Rudebaker in 1914. Since modern times, the traffic cones have been made of thermoplastic or rubber with bright warning colors for road users to observe from a distance. The recycled polyvinyl chloride can also be used to make traffic cones. In addition to traffic cones, safety island lights can also provide similar functions.
Typical traffic cones are cone-shaped or cylindrical road signs with fluorescent red, blue, yellow, green and other warning colors. Most of them are made of synthetic resin. In order to increase the visibility of drivers, traffic cones generally Attach reflective tape.
In addition, due to the low durability of thermoplastics, it may be oxidized through long-term use or damaged in cold weather. To solve this problem, traffic cones made of ethylene/vinyl acetate copolymer began to be widely used in cold regions. EVA has good stability, good anti-aging and ozone resistance, and non-toxicity, so the damage rate in cold weather is very low. Some traffic cones are made of elastic materials, which are not easily damaged even if they are rolled and can automatically return to their original shape.