Major improvement works under the programme include refurbishment of concourse and platform areas , increasing the number of passenger lifts in mtr stations , improving air - conditioning in underground mtr stations , enhancing the public address system and closed circuit television , etc . this rolling programme of station improvements is targeted to be completed by 2006 主要的工程包括翻新大堂及月台、添置更多的乘客升降机、改善地底车站的空调设备、广播系统及闭路电视等。整项计划预计于二六年完成。