Some of the buses start at Jamaica and then go to -- Aruba, Barbados, Martinique, OPR, Trinidad North, Trinidad South, then out.
Some start at Martinique and then go to -- OPR, Trinidad North, Trinidad South, Jamaica, Aruba, Barbados, then out.
The whole loop takes about 7-8 minutes if you would happen to get on at the very first stop.
There is also an internal bus.
Yes, they are right next to each other, but they are separated by a fence.