The Truckstopper RB-001-30 Rising Bollard System is a manually operated shallow mount system that is operated by an 18 Volt portable drill. When in the closed position it resides below grade, being shielded by a heavy gauge steel cover. It is perfect for applications where areas or streets require crash protection for periodic events. When the bollards are lowered or not in use, vehicular or pedestrian traffic can simply pass over them. A single bollard is rated to stop a 16,534 lb. vehicle traveling at 30 mph within 9.2 feet (2.8 meters) upon impact.