65448035__WNBR____Wiki_information_site__4
[0] Accident involving rider and other road user [1] very low [2] Legal requirements appertaining to stopping, exchange of details, emergency services, if necessary [3] If injured, participant may be naked [4] 
Rear of ride marshal to advise front marshal. If rider has an accompanying person to deal with it, rear marshal is to withdraw and assist victim. Police are likely to be in attendance in any event.
Cardiff - World Naked Bike Ride (WNBR) - Wiki information site
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