A train used primarily by commuters, especially during rush hours; a commuter train.
通勤電車は朝のラッシュで非常に混雑する。
Commuter trains are extremely crowded during the morning rush.
この路線の通勤電車は本数が多く、座れることは少ない。
There are many commuter trains on this line, so it's rare to get a seat.
座れなかったので次の通勤電車まで立っていた。
I couldn't get a seat, so I stood until the next commuter train.