大欖隧道
In September 1995, Electronic Toll Systems Ltd. had developed another electronic toll collection system. It was then installed at Tate's Cairn Tunnel for testing and further expended to Shing Mun Tunnels and Tseung Kwan O Tunnel in October 1997. This system is not compatible with the one from The Autopass Co. Ltd. Besides, the Lantau Link and Tai Lam Tunnel originally planned to use this system too. Due to the merger of these two systems in 1998, the system from The Autopass Co. Ltd. was used instead.