> Actually, upon further review, it turns out Kam Ho Road also has share_taxi=no.

But that only means Kam Ho Road and Tung Wui Road should get the same classification, and does not imply anything about what the classification is, right? After all, the whole point of this discussion initially was to decide whether Tung Wui Road is `=secondary` or `=tertiary`.

Imho just the fact that Kam Ho Road and Tung Wui Road provides access to Kam Sheung Road Station should be enough to justify `=secondary`. KSR station (alongside with the bus terminus and park & ride) basically gives indirect railway access to the entire Kam Tin/Pat Heung plain, and perhaps the villages along CPR-Tam Mi too. It's similar to how Pat Heung Road gets `=secondary`, presumably due to the connection with Tai Lam Tunnel.