For North America, no changes to M2015 test procedures. M2020D There is a change for ECE compliance in Europe, effectively splitting the Snell certification in 2. M2020R Reading through the test procedures, the Euro version has more secondary impact testing to assure ECE and FIM compliance. Snell advises these 2 are equal safery standards...based on their data...despite different testing procedures. From https://www.smf.org/stds - "It is expected that helmets which meet either M2020 option will satisfy the following objectives: • provide a premium of protective capability • capable of meeting mandatory requirements o M2020D – intended to enable DOT and/or JIS as required in North America and Japan o M2020R – intended to also enable ECE 22-05 and FIM FRHPhe-1 as required in Europe and elsewhere • comparable in weight and bulk to helmet models currently certified to M2015 • comparable in costs to helmet models currently meeting M2015."
