A comment on Melody's helpful post ~

Regarding the red plate route taxis, the beach route ends and the west end route begins at the bus park.

There is an 'informal' area next to the cambio at the roundabout where riders can 'usually' pick up a taxi in the direction they want to go. Sometimes this option is not available, whereas the bus park always is.

When in doubt I ride to the bus park and get my next ride there. The bus park can be noisy and exciting, but the folks are very helpful, just tell them where you are headed and they will direct you toward the vehicles for the route you want.