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Increasingly, track day organisers specify the same helmet standards as those which apply to motor sport. These are easier to pin down because they’re spelt out in section Q of the ‘Blue Book’ – the MSA Motor Sports Yearbook. For club racing or speed events, you need a helmet which meets one or more of the following: FIA8860-2004, SA2005 or 2000, SFI 31.1A or 31.2A, BS 6658-85 Type A/FR or Type A (but not Type B). Helmets used in competition must be scrutineered before use to check their suitability. The scrutineer will attach a blue MSA approval sticker.