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Bicycle Helmet Safety Institute

Short Helmet Standards Comparison



This is a summary of our longer and much more detailed point by point helmet standards comparison.



                  CPSC      ASTM    Snell    Snell	
                            F1447   B-90A    B-95
                                                     

Drop height on    2.0 m     2.0 m    2.2 m   2.2 m*
flat anvil                                   2.0 m

Drop height on    1.2 m     1.2 m    1.3 m   1.5 m*
hemispherical                                1.3 m
anvil

Drop height on    1.2 m     1.2 m    1.2 m   1.5 m*
curbstone anvil                              1.3 m
                                     

Drop rig mass      5 kg     3.1 kg     5 kg     5 kg
for impact tests            to 6.1                 

Total energy:     98 J       90 J     100 J    110 J*
adult test                                    100 J
medium headform
flat anvil

Failure 
threshold       300 g     300 g     300 g     300 g

Coverage vs.     Same      Less      Same      More
CPSC 1999

Strap jerk       24 J      24 J       24 J     24 J
(joules)                                       

Rolloff test     Yes       Yes        Yes       Yes
                         

*Snell B-95 uses a more severe impact for initial 
certification than for follow-up performance testing.
 
Snell considers the B-95 strap jerk test to be roughly
equivalent to the B-90A test, although parameters have 
changed.





This page was last revised on: June 19, 2014.

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