In recent years, the number of hydraulic doors, that do not need much human power, has been increasing, but there are still quit a few taxis with a human-powered doors using a wire or similar device, which means that this task for the taxi drivers is surprisingly heavy physical work.
近年では、油圧式で強く腕力を要しないものも増えてきたが、ワイヤーなどで乗務員の人力に頼るものも多く、意外な肉体作業である。