Voyons kenny24, ce n'est pas difficile, c'est comme pour les mains: la main gauche c'est celle où le pouce est à droite et inversément
L'explication sur Wikipedia version anglaise est nettement plus claire et complète que la française en ce qui concerne le côté du trafic et celui du conducteur.
left-hand traffic LHT in which traffic keeps to the left side of the road (
Angleterre), or right-hand traffic (
RHT) in which
traffic keeps to the right. (
pour nous)
Vehicles are usually manufactured in left-hand drive
LHD (
pour nous) and right-hand drive RHD (
pour l'Angleterre) configurations,
referring to the placement of the driving seat and controls within the vehicle.
Typically, the placement of the steering wheel is opposite to the rule of the road: LHT countries use RHD vehicles, and
RHT countries use LHD vehicles.
This is so that the driver's line of sight is as long as possible down the road past leading vehicles, an important consideration for overtaking (passing) manœuvres.
Les exceptions qui confirment la règle
However, there are LHT countries where most vehicles are LHD (see Caribbean islands below)—and there are some countries with RHT and mostly RHD vehicles, such as Afghanistan, Burma, and the Russian Far East. Many countries permit both types of vehicles on their roads.