High vis is a vexed subject for cyclists. Photograph: Arthur Meyerson/Corbis
A couple of years ago I took a condensed version of the training programme for cycle officers with London's City police, a process which began with my instructor following me to assess my riding as we pedalled through the busy streets. His verdict? Mainly fine, barring what he insisted on terming a "mistake" - that even in early afternoon on a bright April day I was not wearing some sort of high-visibility waistcoat or jacket.
High vis is a vexed subject for cyclists. Probably only helmets and light jumping cause more arguments. Ultimately, of course, what you wear on your bike is personal choice. Full Lycra gimp garb? Office clothes? Nothing at all? Go right ahead. Nonetheless, the debate merits an airing, for two reasons.