Re Pok Fu Lam Road, I see the `=secondary` section is essentially the only path towards the `=primary` section, so it makes sense for them to be `=secondary`, though it makes that area full of `=secondary` roads, which is unavoidable.

Still, again, looking at Castle Peak Road Tsuen Wan, Belvedere Garden section, does it make sense to promote it to `=secondary`? Eastbound vehicles can take the turn into the Old Road, which I think is similar to the situation here at Clear Water Bay Road. It's shorter too, just like the situation here, with possibly coordinated traffic lights. But no one would do that; they would just continue on towards Hoi On Road.

Re Fei Ngo Shan Road, while one may argue it wants to connect with Clear Water Bay Road and so the relevant section should be at least `=secondary`, one may also consider that the vehicle essentially still stays inside some local roads until the turn to the New Road near Good Hope School, at which point it promotes to `=primary`. It is then a pure coincidence the vehicle is passing through the Old Road, and then the Old Road does not have obvious importance.

Also consider KMB 91/91M, sometimes when they are sending trips from UST to Kowloon, depending on the vehicle running the trip, they just have to take the New Road and omit stops because the Old Road is just too difficult to maneuver (I think is vehicle length restriction). Further argument for why the Old Road is just not as important as `=secondary`. 

It's just like CPR-TsuenWan, except this time the local road is longer, and may by coincidence also support cross-district traffic.

Thus, I think the Clear Water Bay Road (old section) should be `=tertiary` instead of the inaccurate `=secondary`.