two trains traveling down the tracks next to each other 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 next to each other two trains are 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 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 traveling down the tracks next to each other two trains are traveling down the tracks next to each other two trains are on the tracks next to each other two trains are on 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 next to each other two trains are traveling down the tracks two trains are traveling down the tracks two trains traveling down the tracks next to each other two trains are on the tracks next to each other two trains are on the tracks next to each other two trains are on the tracks next to each other two trains traveling down the tracks next to each other two trains are 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 next to each other two trains traveling down the tracks next to each other two trains are on the tracks next to each other two trains are traveling down the tracks next to each other
A train that is following the tracks next to another train.  A passenger train that is driving down the tracks. A couple of trains parked next to each other. A bullet train in a European country is ready for passengers  two sub trains sitting on tracks next to a station