I have driven in all the prefectures but: Hokkaido, Miyazaki, and Okinawa. Naturally the big cities, winter in the mountains, and the Japan Sea coast in winter present the most difficult driving conditions. But the question asks about laws. Actually the laws are all very reasonable and common sense should be your guide. You should also keep in mind that what is legal in your country may not be legal in Japan. One example is the inside turn on a red signal. Turning on a red light is usually, but not always, illegal in Japan. The one that always gets me is the concept of yielding during a left turn from a stop sign. In the USA, where I learned to drive, it is the first to arrive gets to go first, but one should yield to the right of way if the things are close. In Japan, if the other car arrives much after you, and they are going to continue straight, you should yield. Yes, you are already in the intersection, but you should yield. More often than not you can go, but I believe doing so is against the law. So, if you get in a fender bender your percentage of fault will likely be higher than you would expect. This brings up a second thing that I have had a hard time getting my head around. The Japanese police asses a crash scene and determine percentages of blame. A while back, I was driving along a rural road, NOT speeding, and some guy ran a stop sign and lightly hit me, denting the back door. I was assessed as having 10% (maybe it was 20%) blame for the accident. I know better than to argue, but jeezel-weezel 20% for just being there! First accident in 30 some years. Bummed me out. In the end it didnt cost much because I drove a model of car that is very common and there were a ton of used parts to be found. Also Japanese car mechanics are very reasonable. Unless you drive a foreign car; then youre gonna haemorrhage great wads of cash.
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