为了适应社会需要,改善邮政服务,加快信函的传递速度,北京市邮政局自1983年8月10日起,在市内的一些主要商业服务中心、交通要道、居民聚居区和政府机关门前设立了一种快班信筒。为了与普通的绿色信筒相区别,这种信筒顶部为黄色,被称为“黄帽子”信筒。“黄帽子”信筒每日开取六次,比普通信筒多开两次。并且,这类信筒由专人专车开取,减少了周转环节,加快了投递 In order to meet the needs of society, improve postal services and speed up the delivery of correspondence, the Beijing Post Office has set up offices in front of some of the city’s major commercial service centers, traffic arteries, residential areas and government agencies since August 10, A fast shift letterbox. In order to distinguish it from the ordinary green letterbox, the top of the letterbox is yellow and is called the “yellow hat” letterbox. “Yellow Hat” letter tube open six times a day, more than ordinary letter tube open twice. And, this kind of letterbox was taken by a special car, reducing the turnover and speeding up the delivery