You can have a safe and event free time driving in Korea if you follow some simple rules.
Rule 1. Forget any rules you may have picked up in other countries. Korean driving is survival of the fitest or richest (I will get to the rich part in a minute)
Rule 2. Being polite will get you run over in most cases. Driving too slowly will get you run over. Koreans drive with their horns; not their brakes.
Rule 3. If you happen to get into an accident, admit nothing if it is your fault. If it is not and the other driver offers money, take it. This is not a bribe. This is simply excuse my stupidity money; nothing more. The amount will usually be enough to cover any damages you may have incurred. This also keeps insurance rates in Korea extremely low since it keeps them, the cops, and lawyers out of it.
Rule 4. Quarter-panel rule. The person whose front fender is in the lead has the right of way; no exceptions. This is especially the case with large or luxury vehicles. break this rule and it gets expensive (the rich part I mentioned earlier) and dangerous.
Rule 5. Do not drink and drive. Absolutely no reason for it. Rule 6. In rural areas, stop signs are for decoration. The locals know when it is safe to stop or not stop at a particular intesrsection at a particular time of day. Rule 7. Always look a another driver in the eye to communicate your intentions. If they do not see you, you are not there and therefore not at fault in the event of an accident. This also applies to pedestrians.
Rule 6. Motorcycles and scooters go anwhere; including the sidewalk.
Rule 7. All bus and taxi drivers in Korea have posters of Shumacher on their walls. Figure that out.