Safety Protocol Specification
DOT FMVSS 218
Story & Background
Introduced by the US Department of Transportation, FMVSS 218 is the mandatory legal requirement for all helmets used on US public roads. It prioritizes energy absorption and penetration resistance.
1974
Initial introduction of FMVSS 218 by NHTSA.
1988
Significant update to testing procedures and labels.
2011
Updated to combat 'novelty' helmets with stricter labeling.
2024
Current standard remains primary US legal requirement.
Testing Protocol & Methods
US DOT Standards
- Impact Attenuation: Drop tests onto flat and hemispherical anvils.
- Penetration Resistance: 6lb lead-weighted striker dropped from 10ft.
- Retention: Straps must resist 300lbs of force without breaking.
Technical Specifications & Performance
Peak Acceleration
400G
Impact Speed
6.0 m/s
Penetration Mass
3.0 kg
Dwell Time
2.0 ms
How it Compares: The Safety Gap
DOT 218 vs ECE 22.06 (The Gold Standard)
DOT FMVSS 218
Max G-Force Allowance: 400G
Impact Sensors: 1
ECE 22.06
Benchmark
Max G-Force Allowance: 275G
Impact Sensors: 12