The Quick Deploy Spring Cone is the only self deploying collapsing cone. The 5 lb. Spring Cone is designed for use on high speed roadways, (speeds exceeding 60mph), heavy wind and high draft conditions and is also ideal for portable emergency landing zones. Quick Deploy Spring Cones take impacts and spring back into action. Half the weight of traditional pvc cones, they are easy to carry and deploy. Spring Cones also store in 1/3 the space of traditional pvc cones making them ideal for emergency responders, utilities and towing operations. Specify 5 lb. or 3 lb. Spring Cones when ordering totes. VizCon Quick Deploy Spring Cones are the only collapsing cones MUTCD compliant for use day and night.