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OpinionLetters

Letters to the Editor, November 17, 2015

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An area of Hoi Ha has now been cleared. Photo: K. Y. Cheng
Letters

While I can understand David Sorton's frustration over the lack of information about the arrival time and precise location of buses in Hong Kong ("Good public transport could be great with bus timetable upgrade", November 13), it may not be economically feasible or environmentally friendly to display such information electronically in countless bus stops across the city. In fact, the three major bus companies all offer smartphone apps through which passengers like Mr Sorton could get the information they need.

Nevertheless, I do believe that the bus companies in Hong Kong should further upgrade the current smartphone-based bus information system to improve the overall efficiency of their bus fleets. Through GPS technologies, the smartphone apps should allow the passengers to share with the bus companies their locations so that the system could estimate how many passengers are waiting for buses. (A simple button may be made available at the bus stops for passengers not using the smartphone apps to indicate their locations.)

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In addition, by monitoring the human traffic on and off the buses using infrared sensors, the system could also keep track of the number of passengers on board in real time. With the real-time information of the number of passengers on board and those waiting in the bus stops, the system can then dynamically adjust the frequencies and sizes of the buses (for example, double-decker versus single-decker). This is better than following a predetermined fixed schedule, and it can optimise the overall efficiency of the bus transportation system.

In the long term, city planners may also use the aggregate data collected by the system to improve the overall design of the bus routes and schedules.

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Developing such a smart bus information system should be helpful for realising Chief Executive Leung Chun-ying's vision of building a smart city in Hong Kong.

Simon Wang, Kowloon Tong

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