Transport for London's latest cycle safety campaign focuses on road user awareness of what's going on around them. Especially HGV drivers. But this awareness test genuinely shocked us, making the point that however observant you may think you are, however you use the roads, you often don't see things you're not looking for.

To reduce the number of incidents involving cyclists and lorries, TfL are giving out free "safety lenses" to freight companies operating vehicles in London. Stuck to the passenger window, these improve lorry drivers' vision of cyclists riding close to their cab.

Reciprocally, they're giving away environmentally friendly wind-up powered secondary lights to cyclists to help improve their visibility (email cyclesafety@tfl.gov.uk to apply for yours), and are promoting free or subsidised adult cycle training throughout the city.

Seriously, though. Do the test. We're dying to make gags about it but we'll only spoil it for you.

For more information about cycle safety visit Transport for London.