With commercial property crime on the rise and the increased threat of a terrorist attack insurance premiums are going up, the security conscious property owner needs to make a decision on how to best protect and defend their property against security threats. Most security breaches are made on site entrance and exit, 70% of these are vehicle aided attacks. A crash rated road blocker may be the most important investment a property owner will make. Road Blockers are used where high perimeter security is required. The units are designed to restrict heavy duty commercial vehicles in secure areas and are ideal for the protection of financial establishments, embassies, bullion depots as well as lorry and distribution depots.