Bollard Crash Ratings Complete Guide: ASTM, PAS 68, IWA 14-1 Explained

Crash ratings are the foundation of security bollard specification. They tell you, in measurable engineering terms, exactly what a bollard can stop. Without a crash rating, a bollard is a decorative post with unknown performance. With one, it becomes a certified security barrier that can be specified, insured, and relied upon.

This guide explains the four major crash test standards, what each rating means, how tests are conducted, and how to verify that a manufacturer's claims are backed by real testing.

## The Four Major Standards

### 1. ASTM F2656 (United States)

ASTM F2656 is the current US standard for crash testing of vehicle security barriers. It replaced the older DOS SD-STD-02.01 specification in 2007 and has been updated several times, with the current version being ASTM F2656-20.

ASTM uses a vehicle weight and speed notation system:

• **M30**: Stops a 6,800kg (15,000 lb) test vehicle traveling at 48km/h (30 mph)

• **M40**: Stops the same vehicle at 64km/h (40 mph)

• **M50**: Stops the same vehicle at 80km/h (50 mph)

Each rating also includes a penetration classification (P1-P4) that measures how far the vehicle penetrates beyond the barrier. P1 means less than 1 meter of penetration—the highest performance.

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

The Department of Defense K-rating system is older but still widely referenced, particularly in government procurement:

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

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

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

K12 is equivalent to M50 under ASTM. The DOS system also includes L-ratings (L1, L2, L3) for penetration depth, with L3 being the best (less than 1 meter).

### 3. PAS 68 (United Kingdom)

PAS 68 is the British standard, widely used in Europe and Commonwealth countries. It uses a notation that includes vehicle weight, speed, and penetration:

Example: **7500/48/0** means a 7,500kg vehicle traveling at 48km/h with zero penetration past the barrier.

PAS 68 is being gradually superseded by IWA 14-1, but remains widely specified in UK and Middle Eastern projects.

### 4. IWA 14-1 (International)

IWA 14-1 is the newest standard, developed by the International Workshop Agreement process. It harmonizes elements from both ASTM and PAS 68, making it the preferred standard for international projects. IWA 14-1 uses vehicle class designations (C, D, E, G, H) based on weight, with speed and penetration notation similar to PAS 68.

## How Crash Tests Actually Work

A crash test is not a computer simulation. It involves physically driving a real vehicle at a real bollard installation and measuring the outcome.

1. **Test vehicle preparation**: A vehicle of the specified weight (typically 6,800kg for M50/K12 tests) is loaded with ballast to simulate real-world conditions.

2. **Acceleration**: The vehicle is accelerated using a cable tow system to the target speed (48, 64, or 80 km/h).

3. **Impact**: The vehicle is released and impacts the bollard dead-on. High-speed cameras record the event at 1,000+ frames per second.

4. **Measurement**: Penetration distance (how far debris passes beyond the barrier), vehicle deformation, and bollard post-impact condition are documented.

5. **Classification**: Based on penetration distance, the bollard receives its P-rating (ASTM) or L-rating (DOS).

A full crash test program can cost $50,000-$150,000 per configuration. This is why some manufacturers claim crash ratings without providing test reports—they have not actually tested.

## UPARK Crash Certification

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

• The bollard has been physically tested with a 6,800kg vehicle at 80km/h

• Penetration was less than 1 meter (L3 classification)

• The test was conducted by an accredited laboratory

• Full test reports including high-speed video are available upon request

## How to Verify Crash Rating Claims

When a manufacturer claims a crash rating, request the following documentation:

1. **Test report**: A formal document from an accredited testing laboratory (not a self-published white paper)

2. **Testing facility accreditation**: The lab should be accredited under ISO/IEC 17025 or equivalent

3. **Test date**: Crash ratings do not expire, but very old tests may not reflect current product manufacturing

4. **Configuration tested**: Confirm that the tested configuration matches what you are buying (foundation depth, bollard spacing, and number of bollards affect performance)

If the manufacturer cannot or will not provide this documentation, treat their crash rating claim as unverified. The cost of a real crash test is high, which is exactly why legitimate crash-rated bollards cost more than unrated alternatives.