Flecc,not like you to throw in an irrelevant red herring.That's the USA Dave, they shoot children there.
We're a little bit different, especially where road accident rates are concerned.
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The road system in USA and Canada is if anything more safety minded than our tight situation here in the UK,I believe these trailers are very numerate in Canada so inevitably there are more incidents reported from there.
In the UK I must be honest and admit they are very rare. In Holland,with its independent cycle tracks, and in the UK on promenades I can see they must be good fun but on the road in the UK with our traffic density and so many badly lit roads they are just so vulnerable.
Dave
Kudoscycles