It is also used to train the driving skill of a person who is learning to become a bus driver.
This allows the instructor to monitor how the trainee is driving and give appropriate instruction when necessary.
They may also have a separate handbrake or foot-operated brake in order to slow or stop the bus.
In Hong Kong, training buses are known in Chinese as "訓練巴士" (pinyin: Xùn liàn bā Shì).
BEST holds 7 driver training buses at Majas Depot