The line to Station D, Jamaica Station, is the
longest of the three routes which comprise AirTrain. It runs
above the Van Wyck Expressway, an intensely
busy artery, for about three miles.
Although one can't see much of the road
below, one can certainly appreciate the efficiency of zipping along at
high speed on the dedicated right of way.
The linear induction technology utilized by AirTrain is evidenced by
the wide middle rail seen between the two running rails in this photo.