Each adult can bring a child under 1.2m free of fare. Passenger bringing more than 1 child under 1.2m should buy ticket for the other child/children.

　　Disabled passengers such as blind, deaf, mentally handicapped persons, passengers have difficulty in actions, children before schooling and psychiatric patients should be accompanied by healthy adult when taking the train service. When there is no accompany, station staff should be contacted timely to provide relevant assistance.

　　Dangerous goods such as inflammables, explosives, toxic, corrosive and lethal items (Blasting cap, dynamite, fireworks, gas, diesel, kerosene, paint, calcium carbide, liquefied gas, acids etc.) as well as serious odorous items or items can easily foul the metro facilities or station/train environment are prohibited in the railway premises.

　　答案： 为保障地铁运营秩序，为乘客创造安全、便捷、和谐的乘车环境，依据《城市轨道交通运营管理办法》、《北京市城市轨道交通安全运营管理办法》等规定，特制定本守则。

　　凡进入地铁范围(含出入口、通道、站台、站厅、车厢)者均须自觉遵守本守则、运营通告和社会公德，讲究文明礼貌，接受、配合地铁工作人员的管理和安全检查，共同维护乘车秩序。