What are the evacuation distances for a VBIED (around 500 pounds)?

What are the evacuation distances for a VBIED (around 500 pounds)?

• A. 5 pounds IED; 70 ft; 1200 ft
• B. 50 pounds IED; 150 ft; 1850 ft
• C. 500 pounds (ie car); Mandatory 320 feet; Preferred 1900 feet
• D. 1000 pounds IED; 500 ft; 3000 ft

Answer: (C)

Distances rise with the size of the explosive and are split into a mandatory minimum and a longer, preferred safety distance. For a VBIED around 500 pounds, you must clear at least a mandatory distance of about 320 feet to account for blast overpressure and fragmentation. If conditions allow, aiming for a longer, preferred distance of roughly 1,900 feet provides a much greater safety buffer, reducing risk to personnel and giving responders room to operate and assess the device safely. These numbers come from hazard-distance guidance used in security and EOD planning, which is why a 500-pound device uses a much larger, more conservative standoff than smaller devices. In other contexts, smaller devices would have correspondingly smaller mandatory distances and not the same extended preferred distance, while much larger devices would require even greater standoff.

Distances rise with the size of the explosive and are split into a mandatory minimum and a longer, preferred safety distance. For a VBIED around 500 pounds, you must clear at least a mandatory distance of about 320 feet to account for blast overpressure and fragmentation. If conditions allow, aiming for a longer, preferred distance of roughly 1,900 feet provides a much greater safety buffer, reducing risk to personnel and giving responders room to operate and assess the device safely.

These numbers come from hazard-distance guidance used in security and EOD planning, which is why a 500-pound device uses a much larger, more conservative standoff than smaller devices. In other contexts, smaller devices would have correspondingly smaller mandatory distances and not the same extended preferred distance, while much larger devices would require even greater standoff.