I've seen those traffic barriers around town.  And they are usually of various shapes and sizes, some concrete, some big huge plants that one can not pick up and move, some simple chains, and some just those orange cones.  And they are all usually used for the same purpose, as barriers for automobile traffic, for various reasons, usually security, parking or just for pedestrian walkways. And if you happen to be looking for retractable barriers, TrafficGuard Direct has security barriers, traffic control devices, bollards and vehicle barriers for when you need access control for entry and exit. Their barriers and traffic bollards are removable, collapsible and manually operated. TrafficGuard Direct has traffic control products for your traffic control needs.