AA1 was converted to a mobile passenger service center in 1995 and visiting different districts to collect passengers comment on bus services.
AA1于1995年被改作九巴流动服务中心，定期到访各区收集乘客意见。
This paper analyzes the intelligent transit passenger service system from onboard unit, platform service and control center, and introduces the database design for platform touch-screen query system.
本文从车载、站台以及控制中心三方面分析了智能公交乘客信息服务系统，重点介绍了站台触摸屏公交查询系统中数据库的设计。
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