1Traffic or transportation — the movement of people and goods by road, rail, air, etc., and the vehicles and systems that support it.
このあたりは交通の便がいい。
This area has convenient transportation access.
事故のせいで、この道路は交通が麻痺している。
Because of the accident, traffic on this road is paralyzed.
台風の影響で公共交通機関が乱れている。
Public transportation is disrupted due to the typhoon.
子供には交通ルールをしっかり教えるべきだ。
Children should be thoroughly taught traffic rules.
2Contact or exchange between people, regions, or countries; a somewhat formal usage now mostly seen in historical contexts.
江戸時代、日本と外国との交通は厳しく制限されていた。
During the Edo period, contact between Japan and foreign countries was strictly restricted.
3Social intercourse between people. This sense is essentially unused in modern Japanese, having been replaced by 交流 in everyday usage.