《苏州市市区户外公益广告设置管理办法》自2009年5月24日起实施。该办法规定市区主要道路和窗口地区户外公益广告不得低于20%,市区大型户外广告设施不得空置。为了鼓励社会资金赞助,政府还首次设立了户外公益广告奖。根据新出台的管理办法,有关单位需要设置户外公益广告的,应当 “Suzhou urban outdoor public service ads set management approach” since May 24, 2009 come into operation. The approach stipulates that outdoor public service advertisements in major urban roads and window areas shall not be less than 20%, and large-scale outdoor advertising facilities in urban areas may not be vacant. In order to encourage social funds sponsorship, the government also set up outdoor public service advertising award for the first time. According to the newly introduced management measures, the relevant units need to set up outdoor public service ads, it should be