Keeping pedestrians safe, protecting structures from accidental or intentional automobile crashes, and force protection (keeping employees and visitors from harm) have always been campus safety concerns.
Most everyone understands keeping military bases, embassies, courts, nuclear plants and other hard targets safe from terrorists. However, today, we must also keep retail shoppers safe, shield structures from accidental or intentional automobile crashes, protect hotel patrons from suicide car bombers, and keep employees and visitors from vehicle-based harm. From pedestrian-filled farmers markets and universities to new and used car lots, a wide variety of organizations find peace of mind through the use of barriers, bollards, barricades and crash gates for vehicle-based physical access control at the perimeter.
For those areas where a vehicle will never enter, fixed bollards and barriers are the norm. However, at entrances, barriers that go up and down are needed to let authorized vehicles through.