Is it really necessary to have a separate bike light on your handlebars when youre already wearing a headlamp on your helmet, or are manufacturers just trying to sell us more gear we dont need? Ive seen some headlamps that are specifically designed for cycling, with features like red lights and adjustable beams, so it seems to me like they could easily replace a bike light. But at the same time, Ive also read reviews from cyclists who swear by having both a bike light and a headlamp, claiming that the extra visibility and flexibility are worth the extra cost and weight. So, whats the real difference between a bike light and a headlamp, and do we really need both to stay safe on the road? Is it just a matter of personal preference, or are there actual safety benefits to having both?