There is no law against using your headlights in daylight - assuming they are not dazzling other drivers of course - in fact a European study concluded that using dipped headlights at all times can reduce the chances of being involved in a collision by as much as 30%. However, incorrectly adjusted headlights can be a significant distraction particularly with higher-powered LED arrangements. Drivers may be using the automatic setting on headlights which is causing them to be illuminated more frequently, or may not even be aware that they are switched on as the majority of cars will automatically turn off headlights when the vehicle is switched off. Unfortunately it is down to the individual to ensure their lights are correctly aligned.