
This is Grand Central Station which I use everyday. From here to Scarsdale, there are several kinds of rail services. During rush hour, express trains stop at Scarsdale and go to Grand Central Station. Such trains are usually congested but you can sit down anyway. There are local services as well. Some express trains do not stop at Scarsdale but stop at other stations which my train skips.
Confusingly, both express and local trains stop at the same platform. Yesterday, I took a train back home without thinking much. Then I realized it doesn't stop anywhere until White Plains which is two stations after Scarsdale and I had to take a taxi to reach to my home finally. Lesson learnt: make sure you get on the right train.
気をつけていないと、自分の駅に止まらない電車に乗ってしまう羽目に陥ります。携帯でMetro North Railroad のサイトを見て、次の電車はどこに止まるかチェックしなければなりません。(ホームの入り口か中央コンコースに行けば、止まる駅は掲示されているんですけど。でもホームはコンコースと違う階だったりするので、面倒なのです。)