Following on from the recent tragedy in Cupertino, where two prospective Olympic athletes have been run down and killed by a County Sheriff, it seems worth highlighting this amazing video from Transport for London.

It’s amusing and chances are you’ll fail. Go over to Do the Test to find out more – it’ll only take thirty seconds to get the message and it’s completely work safe. Then click through to ‘more info’ to get the science.

You’ll be pleased to hear I failed too. Thanks to Ollie at the Sussex Muddy@rsers for the link.

Despite the jokey nature of this post, I’d still like to extend my sympathies to the two families affected by this weekend’s accident.