roadbed. The track has only three switches: a left/right split switch just before loading/unloading, a left/right combine switch just after safety check station/dispatch and a compound switch to swap vehicles in/out of the maintenance bay, behind the mirrors. Beneath the slot a tubular guideway guides the front wheelset and a damper for the rear wheelset, and three electrical buss bars provide the EMV 480 volts AC. The power is divided among the two motion systems, control, safety, and audio systems. Each transport can accommodate twelve guests with three rows of four seats each, with the front-left seat behind a non-operational steering wheel. Each troop transport is a motion simulator which travels at a maximum speed of just over atop a slotted roadbed / guiderail track. The transport car body is attached by three hydraulic rams to the frame of the chassis, which allows the shell to articulate independently. A guest's physically intense experience is programmed to achieve the illusion of greater speed and catastrophic mechanical failure using the enhanced-motion vehicle's ability to add several feet of lift then rapidly descend, shudder and tremble, and intensify cornering with counterbank and twist. The intensity of each experience varies as the on-board computer constantly chooses between pre-programmed intensity versions already stored in its memory as it traverses the show building with its load of guests. This ride system was invented specially for the Indiana Jones Adventure, and has only been implemented in one other attraction: Dinosaur, located at Disney's Animal Kingdom (opened as CTX: Countdown to Extinction). However, the Japanese counterpart uses linear-inductive actuators instead of three hydraulic rams. The 35 gallons of hydraulic fluid used on the Disneyland version takes two hours to clean up the track when a hose splits, in which if there is hydraulic failure, the vehicle is incapable of driving. Because of Japan's environmental codes regarding oil spills, the design team elected to substitute electromagnetic actuators on the ride vehicle. Three of these actuators are used to create a three-dimensional (pitch, roll, and elevation) motion platform chassis on which the car body sits. Heavy or light traffic within the ride system can cause speed variations as the vehicles try not to enter the specified safety distance between one another. On busy days, each vehicle may slow to a crawl at intervals within the ride path in order to allow the vehicle ahead to gain distance, then suddenly jerk