兰州市城市运输管理处快速响应国家政策，为缓解兰州市民出行打车难问题，规范出租车预约服务，有效防止“黑车”冲击出租出市场正常秩序，委托开发“汇召车”出租车预约管理软件。
汇召车 is developed by China Unicom Smart Connection Co.,Ltd.Etaxi is a smart mobile application focus on citizens.The apps is customized for passengers and taxi drivers.Customer can take or book a taxi by this apps conviniently and efficiently.Drivers can also get business by this apps,and reduce vacant to increase income.