When it’s foggy, your auto lights in your modern car do not turn on. You are driving with restricted visibility and expect front only DRLs to be enough (they’re not).
Please learn how to put lights on in your car. I almost rear ended someone turning on to an A road today in <50 metre visibility fog because their Land Rover Evoque had only front DRLs on and were, naturally, not facing me. Not only is this illegal, items absolutely dangerous to road users who actually read a manual on their car and have nous.