Driving

I’m currently in Hokkaido and driving. I’m good with all the driving on the left and the different signs, but I cannot figure out why there is no clear indication if a road has oncoming traffic or not. Lines are mostly in white. Sometimes solid sometimes not. I’ve taken to trying to stay all the way to the left unless a car is in front of me. Sometimes there are yellow and white reflectors on corresponding sides and sometimes I look for the backs of road signs to indicate opposing traffic. Am I missing something?