1.   The train runs on an elevated track above the city street.

2.   The train runs on an elevated track.

3.   The blue train is pulling away from me in the drizzle, gathering speed, effortlessly accelerating along its elevated track.

4.   And emergency workers made a human chain to pass the most seriously injured down from the elevated track bed to helicopters.

5.   At the Smith Street station, where the train emerges onto the elevated tracks, I was gazing out the window and heard the sound of madly flapping wings.

6.   Concrete walls of railway tunnels and pillars supporting elevated tracks may soon be adorned with lines of special paint that will be anything but ornamental.

7.   Just as it leaves the last stop in Brooklyn, Dekalb Avenue, the D train climbs onto the elevated tracks on the Manhattan Bridge and daylight washes in.

8.   Occupying the elevated tracks built for the now-retired PeopleMover, the open-air vehicles are expected to be a major attraction with waits of up to an hour.

9.   On one ride, called Sky Cycle, kids and their parents have to work together to pedal a colorful, zany-looking car around an elevated track.