I have my hi vis vests in a net side pocket, as it's required for continental travel and needs to be accessible from within the vehicle. Thinking back, when I broke down on the M25, at night, I completely forgot about wearing one, I was in an escape lay by on a predominately 4 lane section with no hard shoulder. Thanks for a timely reminder. I have no idea why I shouldn't have thought it would be safer to put it on, even if not required under U.K. law.