Traffic cones, also called toddlers, road cones, safety cones, construction cones, pylons, or Witches' Hats, are cone-shaped markers, generally made out of plastic or rubber, that are placed on roads or footpaths to temporarily redirect traffic in a safe manner. They are often used to create merge lanes during road construction projects or automobile accidents, though heavier, more permanent markers or signs are used if the diversion is to stay in place for a long period of time.
Traffic cones are designed to be highly visible and easily movable. Various sizes are used, commonly ranging from around 30 cm to a little over 1 m. Traffic cones come in many different colors, with orange, yellow and red being the most common colors due to their brightness. They may also have a retroreflective strip to increase their visibility.
Not all traffic cones are conical. Pillar shaped movable bollards fulfilling a similar function are often called by the same name.
Typical traffic cones are fluorescent "safety" orange and come in sizes such as:
Cones are easy to move or remove. Where sturdier (and larger) markers are needed, construction sites use traffic barrels (plastic orange barrels with reflective stripes, normally about the same size as a 55 gallon (208 L) drum), which may be weighted with sandbags may be used. When a lane closure must also be a physical barrier against cars accidentally crossing it, a Jersey barrier is preferred.
Typically bollards are 1150 mm high fluorescent orange posts with reflective tape and heavy weight rubber bases.
Larger devices such as barrier boards may be used instead of cones where larger areas need to be excluded or for longer periods.
Agency Reviews Patent Application Approval Request for "Vertically Stackable and Retrofittable Traffic Cone Linking"
Oct 24, 2013; By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventors Henderson, David...