Bus operator's workstations neglecting ergonomic featurescan cause overall discomfort and injuries to the users. Thispaper presents use of JACK® , a human work simulationpackage, in designing and evaluating a bus operatorworkstation which can provide sufficient visibility, naturalreach, and comfortable posture for operators who range fromthe 5th percentile female to the 95th percentile male as definedby SAE J833 (SAE, 1994). Three human models representingthe two extremes and their medium size person were createdand performed 15 bus operating tasks on the bus workstationimplemented in JACK® . Kinematic constraints were definedbetween the human models and the workstation to simulate thetasks in a realistic manner. While the human modelssimulated the tasks, the body joints were monitored todetermine if they exceeded their comfort ranges recommendedby Diffrient et al. (1981) and the workstation was evaluated interms of visibility, reach, comfort, and adjustability. After theworkstation design was refined by iterative modifications andthe required component adjustment ranges were determined,the workstation design was prototyped into an actual workingbus. A jury of bus operators evaluated the workstation designby operating the prototype on a test track. The response fromthe operators indicated that the workstation wouldaccommodate the intended population.