Two trains close together?

I was taking some pictures of a train nearby and after it went passed I started to head home. Then I heard another whistle and scampered back. Another train was coming from the same direction, but on a different track, I believe the one right next to the previous train. I personally have never seen that before.... show more I was taking some pictures of a train nearby and after it went passed I started to head home. Then I heard another whistle and scampered back.
Another train was coming from the same direction, but on a different track, I believe the one right next to the previous train.

I personally have never seen that before.
Is that common?

https://flic.kr/p/LV8tMC

https://flic.kr/p/LV8tTj
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