Honshu bicycle tour

Can anyone give me soem information about cycling in Honshu, I mean the side of the Sea of Japan. There are little tourists there, I like that, but how is traffic on route 9 for example and the rest of the coast is it okay for riding a bicycle.
Thanks very much

Route 9 : You can see many cars on the way in Japan from this video.
This video took someone drive to Yamaguchi from Kyoto by route 9.
https://www.youtube.com/watch?v=5mTGM4INcac

Have a safety trip!

Thanks very much

I would suggest looking on ridewithgps.com mapmyride.com or similar. On these sites you can search areas and see where others are riding. For instance http://www.mapmyride.com/jp/tottori-tottori/