Going green is an admirable goal, but not one that’s always easy to achieve. New pneumatic bollards are 60 percent more efficient and cost-effective than electro-magnetic units, considering power requirements and installation, operating and maintenance costs. These durable, flood-resistant and green physical security tools can provide up to 300 cycles per hour using low voltage and current draw. They are crash-rated and tested with a 15,000 lb vehicle going 50 mph, and they operate individually or in groups of up to 10 for more customized installations.