Bollard Crash Ratings: The Complete Technical Guide to ASTM, PAS 68, IWA 14-1

Security bollards exist to stop vehicles. But not all bollards stop all vehicles, and the difference between a bollard that works and one that fails is not a matter of opinion—it is a matter of certified, measured, and documented crash performance. Crash ratings are the engineering language that translates a bollard's physical capabilities into specifications that architects, security consultants, and procurement officers can rely on.

This guide provides a comprehensive technical examination of the four major crash test standards governing the bollard industry. We will cover the history and methodology of each standard, explain the rating notations, describe how crash tests are actually conducted, and provide practical guidance for verifying manufacturer claims and matching crash ratings to real-world threat scenarios.

## Why Crash Ratings Exist

Before crash test standards existed, bollard performance was a matter of manufacturer claims and buyer intuition. A company could market a bollard as "high security" without any evidence that it could stop a vehicle. The 1996 Khobar Towers bombing and subsequent vehicle-borne improvised explosive device (VBIED) attacks drove the development of standardized testing.

The US Department of Defense created the first systematic bollard crash test standard (SD-STD-02.01) in 1985, revised in 2003. This was replaced by ASTM F2656 in 2007. In the UK, PAS 68 was published by BSI in 2005. The International Workshop Agreement process produced IWA 14-1 in 2013, updated in 2016.

Today, any bollard installed at a government facility, military base, embassy, or critical infrastructure site must carry a crash rating from one of these standards. Private sector installations—commercial buildings, stadiums, schools—are increasingly specifying crash-rated bollards as well, driven by insurance requirements and security best practices.

## Standard 1: ASTM F2656-20 (United States)

ASTM F2656 is the current US standard for crash testing of vehicle security barriers. The 2020 revision is the most recent version and includes updated test vehicle specifications and penetration measurement protocols.

### Rating Notation

ASTM uses a vehicle class + speed + penetration notation:

| Rating | Vehicle Weight | Speed | Equivalent mph |

|--------|---------------|------|---------------|

| M30-P1 | 6,800kg (15,000 lb) | 48 km/h | 30 mph |

| M40-P1 | 6,800kg | 64 km/h | 40 mph |

| M50-P1 | 6,800kg | 80 km/h | 50 mph |

Additional vehicle classes include:

• **C**: Small passenger car (1,500kg) at 60-100km/h

• **P**: Pickup truck (2,300kg) at 60-100km/h

• **H**: Heavy truck (up to 29,000kg) at lower speeds

### Penetration Classification

After impact, the penetration distance is measured from the barrier's front face to the furthest point of the vehicle or debris:

• **P1**: Penetration less than 1 meter (highest performance)

• **P2**: Penetration 1-7 meters

• **P3**: Penetration 7-30 meters

• **P4**: Penetration greater than 30 meters (barrier defeated)

For security applications, only P1 is acceptable. A bollard that allows a vehicle to penetrate 7 meters has failed to protect anything behind it within that distance.

## Standard 2: DOS K-Rating (United States, Legacy)

The Department of Defense K-rating system, defined in SD-STD-02.01, is the predecessor to ASTM F2656. Although officially replaced, it remains widely referenced in government procurement specifications and military contracts.

### Rating Structure

• **K4**: 6,800kg vehicle stopped at 48km/h (30mph)

• **K8**: 6,800kg vehicle stopped at 64km/h (40mph)

• **K12**: 6,800kg vehicle stopped at 80km/h (50mph)

K-ratings include L-ratings for penetration:

• **L3**: Penetration less than 0.9m (equivalent to P1)

• **L2**: Penetration 0.9-6m

• **L1**: Penetration 6-30m

K12/L3 is equivalent to M50-P1 under ASTM. When comparing products, confirm which standard was used for testing.

## Standard 3: PAS 68 (United Kingdom)

PAS 68 is the British standard published by BSI. It is widely specified in the UK, Middle East, and Commonwealth countries. While gradually being superseded by IWA 14-1, it remains the most commonly referenced standard outside North America.

### Rating Notation

PAS 68 uses a comprehensive notation: **VehicleWeight/Speed/Penetration**

Example: **7500/48/0**

- 7500kg test vehicle

- 48km/h impact speed

- 0 meters penetration (the vehicle did not pass the barrier)

Common PAS 68 ratings include:

• 7500/48/0: Equivalent to M30-P1/K4-L3

• 7500/64/0: Equivalent to M40-P1/K8-L3

• 7500/80/0: Equivalent to M50-P1/K12-L3

PAS 68 also specifies debris velocity behind the barrier, measured in meters per second. Lower debris velocity means less risk to pedestrians behind the barrier.

## Standard 4: IWA 14-1 (International)

IWA 14-1 was developed through an international workshop agreement to harmonize the ASTM and PAS 68 approaches. It is the preferred standard for international projects and is increasingly specified in European Union procurement.

### Vehicle Classes

IWA 14-1 defines vehicle classes by type and weight:

• **Class C**: Small car (1,500kg)

• **Class D**: Pickup/SUV (2,500kg)

• **Class E**: Medium truck (7,200kg)

• **Class G**: Heavy truck (29,000kg)

• **Class H**: Very heavy truck (29,000kg at higher speed)

### Rating Notation

Example: **IWA 14-1:2013 V/7200[N3A]/64/0**

- Class V (vehicle)

- 7200kg test vehicle

- 64km/h impact speed

- 0 meters penetration

## How a Crash Test Is Conducted

Understanding the testing process helps evaluate the credibility of crash rating claims.

### Test Preparation

1. **Bollard installation**: The bollard is installed exactly as it would be in the field, including foundation depth, concrete pour, and spacing. The installation is inspected and documented.

2. **Vehicle preparation**: A test vehicle is loaded with sandbags or water ballast to the specified weight. The vehicle's weight distribution is measured and documented.

3. **Instrumentation**: The vehicle is equipped with accelerometers. The test site has high-speed cameras (1,000+ fps), measurement markers, and debris screens.

### Test Execution

The vehicle is accelerated using a cable tow system along a guided track. A release mechanism detaches the tow cable before impact, allowing the vehicle to free-wheel into the barrier. The vehicle impacts the bollard at the specified speed, typically within 1-2 km/h of the target.

### Post-Test Documentation

• Penetration distance measured from the barrier face to the furthest point of vehicle intrusion

• Bollard condition photographed and assessed for structural integrity

• Vehicle deformation and debris scatter documented

• Test report compiled with all data, photographs, and video evidence

## UPARK Crash Certification

UPARK's automatic bollards carry K12/L3 crash certification under ASTM F2656-20. This certification means:

• The bollard was physically tested with a 6,800kg vehicle at 80km/h (50mph)

• Penetration was less than 1 meter (L3/P1 classification)

• The test was conducted at an accredited laboratory

• Full documentation including test reports, high-speed video, and penetration measurements is available upon request

This places UPARK's crash-rated bollards at the highest practical protection level for commercial and government security applications. For context, a K12-rated bollard will stop a full-size pickup truck traveling at highway speed—the most common threat scenario for vehicle-ramming attacks.

## Matching Crash Ratings to Real-World Threats

Selecting the right crash rating requires understanding the threat environment:

• **K4/M30**: Adequate for low-speed environments (parking lots, residential driveways, school zones). Stops vehicles at urban speeds.

• **K8/M40**: Suitable for approaches to commercial buildings, retail entrances. Handles moderate-speed threat vehicles.

• **K12/M50**: Required for government facilities, embassies, military bases, and critical infrastructure. Stops vehicles at highway speeds.

Consider the maximum speed a vehicle could achieve in the approach to your bollard installation. If a vehicle can reach 80km/h before impact, you need K12/M50. If the approach limits speed to 48km/h, K4/M30 may be sufficient.

## Verifying Manufacturer Claims

Crash ratings are only meaningful if backed by test documentation. When evaluating bollard suppliers, request:

1. Full test report from an accredited laboratory (not a manufacturer-published summary)

2. Laboratory accreditation certificate (ISO/IEC 17025 or equivalent)

3. Test date and product configuration (confirm it matches the product being sold)

4. Video evidence of the crash test

5. Penetration measurement documentation

If a manufacturer claims a crash rating but cannot provide this documentation, the claim is unverified. The cost of legitimate crash testing ($50,000-$150,000 per configuration) is a barrier to entry that separates serious manufacturers from marketing-driven competitors.