In partnership with the highways department , we are currently installing " advance warning systems " using remote auto - dialling facilities to prevent flooding in hong kong s major subways and underpasses 本署现正与路政署合作,在本港各主要行人隧道及行车隧道安装预先警报系统,采用遥控自动调拨设施以预防出现交通挤塞的情况。