伊達淚 小二上 (2015/02/09)
this system can help people know that where they need to go
I-Hsuan Wu 幼稚園下 (2016/02/13)
In my opinion, setting the RGC system can shorter the waiting line while declaring at the customs. However, some people who are trying to sneak things out go to the green channel instead of the red. My suggestion is for custom to announce that for any nothing-to-declare person who is caught things to be declared shall get a great fine, and custom will pick randomly while people go through the green channel.