A red and yellow train.
A very long train with different colors.
Two bare train tracks. 
this is a train
a set of train tracks
the train tracks split up
this is a passenger train
red bottom of train
a train on the road
front car is yellow and red
roof of car is red
four railroad train passenger cars 
A long train traveling down a track
Tall snowy mountain peaks
a train traveling down tracks under a bridge over another train station and building