2.3.3. Staff Selection

The participants, in particular, the drivers, were selected from a group of drivers with a certain level of experience (average driving age = 8–10 years) and no record of accidents to maximize safety. A total of 65 drivers participated in the test, one of whom was on standby. Two drivers were used for each bus. All personnel received the same training at the same time to standardize operational procedures. In addition, these drivers are professional, driving the same route and work a shift every five days, and they are assigned to the their daily driving routes, which can ensure the familiarity with their course of driving and thus reduce the error impact of drivers' behavior caused by the external factors such as the unfamiliarity with different vehicles on the test data.
