Although it seems beautiful. Fog is a common problem in winters at Pakistan specially on the ways that connect big cities. Well this is just a about a brotherly advise to all visitors who drives often early in the morning. Use fog lights (Highly recommended) & slow down the speed while driving on the Motorway. I have been observed several accidents while on the way from Islamabad to Peshawar via motorway. If you don’t have fog lights installed at your vehicle you can turn on (emergency indicators) in order to avoid any bad thing. Keep the distance!