ECE 22.06: The European Motorcycle Helmet Standard and Testing

The ECE 22.06 helmet standard is the safety regulation that every new motorcycle helmet sold in Europe and more than 40 other countries has had to meet since January 2024. It replaced ECE 22.05, adds the first mandatory rotational impact test, and requires manufacturers to prove protection across a much wider area of the shell than before. Forty-five nations are party to UN Regulation No. 22, the treaty behind the standard, including the entire European Union along with countries such as Malaysia, New Zealand, and the Philippines.¹

What Changed From ECE 22.05

ECE 22.05 had been in force since 2000 and tested helmets at a handful of fixed impact points. Manufacturers knew where those points were, which encouraged optimizing protection at predictable spots while leaving other areas thinner. ECE 22.06 expands the number of tested impact sites across the shell and adds entirely new test categories, most importantly oblique impacts that measure rotational forces on the brain.

The January 2024 cutoff applies to manufacturers and retailers, not to riders. If you already own a 22.05 helmet, you can still legally wear it. New helmets on shop shelves in participating countries, though, must carry the 22.06 mark.

Linear Impact Testing at Three Speeds

ECE 22.06 tests helmets at three energy levels, from a low-speed tip-over to a highway-speed crash. Each test drops a helmeted headform onto flat or kerbstone anvils and measures the force reaching the skull.

Low-energy impacts use a drop speed of 6.0 m/s (about 13.4 mph). Peak deceleration must stay below 180G, and the Head Injury Criterion (HIC) score must not exceed 1,300.
Standard-energy impacts use 7.5 m/s (about 16.8 mph) onto both flat and kerbstone anvils. Peak G-force may reach 275G with a maximum HIC of 2,400.
High-energy impacts push the speed to 8.2 m/s (about 18.3 mph) against a flat anvil only. The 275G limit still applies, and the HIC allowance rises to 2,880.

The low-speed test surprises people. A liner that performs well in a violent crash can be too stiff for a gentler one, transmitting damaging force to the brain instead of compressing. Testing across three speed ranges forces manufacturers to engineer liners that work at both ends of the spectrum.²

Rotational Impact Testing

The single biggest change in ECE 22.06 is rotational testing. When a rider hits the ground at an angle, the helmet doesn’t just compress. It twists, and that twist transmits shearing forces to brain tissue. Those rotational forces are a major cause of diffuse axonal injury and subdural hematoma, injuries the old linear-only tests could not detect.

To measure this, technicians drop a helmeted headform onto an angled surface while sensors record angular velocity around three axes. The result is a Brain Injury Criterion (BrIC) score, which must not exceed 0.78. For context, a BrIC of 1.0 corresponds to a 50 percent probability of severe brain injury.² Multi-density liners and low-friction layers between shell and liner are the technologies that let helmets pass this test. A helmet can ace linear testing and still fail rotational testing if the shell grips the impact surface and transfers twisting energy to the head.

Visors, Accessories, and Optional Ratings

Visor testing goes beyond a shatter check. The regulation fires a 6mm steel ball at 80 m/s (roughly 180 mph) directly at the visor to simulate high-speed road debris. Cracking, splintering, or letting the projectile through means a fail.²

Light transmission is regulated. Clear visors must let a high percentage of light through; tinted visors can transmit as little as 20 percent for daytime use only. Integrated sun shields are tested to confirm they don’t interfere with the primary visor or the shell structure.

Scratch resistance is tested by pouring natural quartz sand onto a spinning visor and measuring how much light the resulting surface scatters. Before the sand treatment, the visor may scatter no more than 0.65 cd/m²/lx; afterward the limit relaxes to 5.0 cd/m²/lx.²

Anti-fog performance is optional. If a manufacturer makes the claim, the visor is exposed to warm saturated air and passes only if its transmittance stays above 80 percent of the initial value for at least 20 seconds. Helmets without this certification simply don’t carry the claim on the label.

Intercoms, cameras, and other electronics shipped with a helmet are now part of certification. Any manufacturer-approved accessory must be tested with the helmet to confirm it doesn’t create a snag point in a slide or weaken the shell. Bolting an aftermarket camera onto a mount the manufacturer never tested puts that modification outside the helmet’s certification.

Reading the Certification Label

Every ECE-certified helmet carries a permanent label stitched to the chin strap. The most prominent marking is a circle containing the letter “E” followed by a number identifying the country that granted type approval, not where the helmet was made. E1 is Germany, E2 France, E3 Italy, E11 the United Kingdom.³

Beside the E-mark is a longer string of numbers and letters. The first two digits are the ones that matter. “06” at the start of that sequence means the helmet meets the current ECE 22.06 requirements. “05” means it was certified under the older standard and was never tested against rotational forces or the expanded set of impact points.³

P, J, and P/J Type Codes

The same label carries a letter code for the type of protection. Full-face helmets carry a “P” (protective), meaning the chin bar is a tested structural part of the helmet. Open-face or jet-style helmets carry a “J,” meaning no chin bar and an exposed lower face.

Modular helmets are where the codes get useful. A modular helmet certified “P/J” has been tested and approved for use in both positions: chin bar locked down and chin bar raised. A modular helmet with only a “P” rating must stay locked while riding; using it in the raised position falls outside its certification, and in some jurisdictions outside the law. If you plan to ride with the chin bar up in warm weather or at low speeds, P/J is the rating to look for.

Using an ECE 22.06 Helmet in the United States

ECE 22.06 is not recognized as a substitute for DOT certification in the United States. The mandatory federal standard for on-road motorcycle helmets is FMVSS No. 218, and any helmet imported for road use must bear a permanently affixed DOT symbol certifying compliance.⁴ A helmet carrying only an ECE label cannot legally be sold or imported for road use in the US, no matter how rigorous its testing.

Importing a non-DOT helmet carries real consequences. Each non-compliant helmet is a separate violation with a civil penalty of up to $5,000, and a related series of violations can reach a maximum of $16,050,000. Customs requires an HS-7 Declaration at entry, and helmets without the DOT symbol will not clear inspection.⁴

The practical route for US riders who want ECE 22.06 protection is a dual-certified helmet. Many major manufacturers now certify their helmets to both DOT and ECE 22.06. A helmet carrying both labels passed the stricter ECE rotational and multi-speed impact tests while also meeting DOT’s penetration and retention requirements.

1
United Nations Treaty Collection. United Nations Regulation No. 22 – Uniform Provisions Concerning the Approval of Protective Helmets
2
United Nations Economic Commission for Europe (UNECE). Proposal for the 06 Series of Amendments of UN Regulation No. 22 (Protective Helmets)
3
SHARP. ECE R22-06 – What You Need to Know About the New Helmet Standard
4
National Highway Traffic Safety Administration. Importation and Certification FAQs