Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
"The airport train (shown in yellow) travels anti-clockwise / counter-clockwise, the other two clockwise."
I think you've got that reversed. Looking from above, you can see that the "All Terminals" AirTrain runs clockwise; the Jamaica and Howard Beach AirTrains run counter-clockwise.
(The confusing part is that the All-Terminals AirTrain serves the terminals in descending numerical order (T8-T7-T5-T4-T2/3-T1), even though that train runs along a clockwise path.)