mass transportation

uncountable

Method of transport, usually public, that carries people in greater quantities than a typical private method such as car.

Japanese Meaning

公共交通機関 / 大衆輸送

Many cities are investing in mass transportation to reduce traffic congestion and pollution.

多くの都市は、交通渋滞と汚染を減らすために公共交通機関に投資しています。

Sense（1）

Method of transport, usually public, that carries people in greater quantities than a typical private method such as car.