How can I find which police stations in Taiwan have camping facilities for cyclists?

Two and a half years ago I walked and hitchhiked around the island of Taiwan. I liked it so much I'm starting my next trip by doing it again.

A couple of months into my trip I learned that some police stations, especially in rural areas, especially on the east coast, actually provide camping facilities for cyclists. (And walkers can use them too.)

This time I'd like to make the best use of them. So I'm looking for their official site, an official list of them, or any unofficial list.

I'm especially interested in whether they exist elsewhere on the island. I passed by or visited a couple of random police stations for unrelated reasons on my last trip and the one in Dulan, Taitung was the only one I saw with my own eyes.