The four currently operating systems connect the main terminal with the airside concourses.
 The west two lines (Airsides 1 and 3) opened with the airport terminal in 1981.
 Airside 4 and its line were built later in 1990, and Airside 2 and its line began operation in 2000.
 The airside systems are similar to the Tampa International Airport People Movers.

Each line consists of two guideways that carry a three-car train each.
 The trains shuttle back and forth between the terminal and their respective airsides.
The stations at the main terminal and the airsides use the Spanish solution: passengers board on an island platform between the two guideways and disembark on side platforms.

Since Airside 4 is the primary concourse for international flights, its system is set up so that when international flights arrive, terminal-bound passengers are not “secure”, while airside-bound passengers have gone through security screening.
 Only one set of doors are open at a time, and trains receive a security inspection before boarding secure departing passengers to the airside.
 This eliminates the need for international arriving passengers to go through additional security screening before heading to the main terminal.

Currently, only Airside 2 and 4 systems use Bombardier Innovia APM 100 vehicles.
Airside 1 and 3 system's Adtranz, later purchased by Bombardier, vehicles were replaced with Mitsubishi Crystal Mover vehicles in 2017.
Airsides 2 and 4's vehicles are not being replaced since those systems were built much later.
The four currently operating systems connect the main terminal with the airside concourses.  The west two lines (Airsides 1 and 3) opened with the airport terminal in 1981.  Airside 4 and its line were built later in 1990, and Airside 2 and its line began operation in 2000.  The airside systems are similar to the Tampa International Airport People Movers.
Each line consists of two guideways that carry a three-car train each.  The trains shuttle back and forth between the terminal and their respective airsides. The stations at the main terminal and the airsides use the Spanish solution: passengers board on an island platform between the two guideways and disembark on side platforms.
Since Airside 4 is the primary concourse for international flights, its system is set up so that when international flights arrive, terminal-bound passengers are not “secure”, while airside-bound passengers have gone through security screening.  Only one set of doors are open at a time, and trains receive a security inspection before boarding secure departing passengers to the airside.  This eliminates the need for international arriving passengers to go through additional security screening before heading to the main terminal.
Currently, only Airside 2 and 4 systems use Bombardier Innovia APM 100 vehicles. Airside 1 and 3 system's Adtranz, later purchased by Bombardier, vehicles were replaced with Mitsubishi Crystal Mover vehicles in 2017. Airsides 2 and 4's vehicles are not being replaced since those systems were built much later.
Orlando International Airport People Movers