A means or method of transportation — ways of getting around, such as trains, buses, bicycles, cars, or walking.
この都市では公共交通手段が充実しているので車がなくても不便はない。
Public transportation is well developed in this city, so it's not inconvenient even without a car.
旅行先では気候や距離に合わせて交通手段を選ぶとよい。
When traveling, it's good to choose the means of transportation according to the climate and distances.
通勤の交通手段を自転車に変えて、運動量が増えた。
I changed my commuting method to a bicycle and have been getting more exercise.