two trains are passing each other in a tunnel two trains traveling down the tracks next to each other two trains are passing each other in a tunnel two trains traveling down the tracks next to each other two trains traveling down the tracks next to each other two trains are traveling down the tracks two trains are traveling down the tracks two trains are on the tracks in a station two trains traveling down the tracks next to each other two trains traveling down the tracks next to each other two trains are passing each other in a tunnel two trains are passing each other in a tunnel two trains traveling down the tracks next to each other two trains are passing each other in a tunnel two trains traveling down the tracks next to each other two trains traveling down the tracks next to each other two trains traveling down the tracks next to each other two trains are traveling down the tracks two trains traveling down the tracks next to each other two trains are traveling down the tracks next to each other two trains are traveling down the tracks two trains are on the tracks next to each other two trains are traveling down the tracks next to each other two trains are traveling down the tracks two trains are traveling down the tracks next to each other two trains are passing each other in a tunnel two trains are passing each other in a tunnel two trains are traveling down the tracks next to each other two trains are passing each other in a tunnel two trains are traveling down the tracks next to each other
two trains ride next to each other on some tracks  The yellow train is going faster than the other train. Two trains emerging from an enclosed, dark station. A duo of train engines coming into a station down some tracks. Two fast moving transits with a read, yellow and green paint scheme. 