The photo clearly shows the differences: while people wearing dark clothing are barely visible, visibility increases with light-colored clothing and again with reflective clothing. Poor weather conditions (fog, rain, snowfall) and dazzling light sources in oncoming traffic further reduce the visibility of people wearing dark clothing. The fact that you feel illuminated by the headlights of a car does not mean that the headlights are sufficient for the car driver to see you equally brightly and clearly. It is up to you to get through the dark season safely. Our example clearly shows how important reflective clothing is for visibility and recognizability. We recommend reflective clothing and accessories (e.g. vests, hats, gloves, etc.) to make you more visible and avoid accidents. You can find a wide range of items that don't cost much at any specialist bike shop, outdoor store, DIY store or online.
The road safety advisors of the Bielefeld police wish you a healthy and accident-free New Year.