In a word - why? I regularly see riders on bikes with no headlight on. This morning on the way to work it was actually 2 out of about 8 bikes (ironically one of these was a guy wearing a fluro vest so assume an L which may explain that one). Can anyone explain to me why a rider would choose to do so? Many car drivers struggle to notice larger and more obvious things like, em, other cars and trucks. So why would you choose to reduce your already small visual profile on purpose. New bikes all come with lights auto on I assume (?) so I guess its mostly the older ones. But is this a deliberate choice, simply forgetting to switch them on (bad habit much like leaving indicators on for ages after turning), or issues with batteries running flat if switch is left on, or what? Genuinely interested to hear from anyone on the forum that rides with lights off as to why they do it. I prefer to be lit up like a Christmas tree lol.