You travel with your set of vehicles of M . M . A . greater than 3 . 500 kg . on a section of road where it is forbidden to overtake . How far should you keep with the vehicle in front ?
The one that allows me to stop, in case of sudden braking, without colliding with it .
The one that allows me to stop, in case of sudden braking, without colliding with it and, in addition, to overtake the one who follows me safely .