I made an HK-wide tidy. openstreetmap.org/changeset/84772139

Please don't delete the lines and replace them with areas. Also, don't mix up `area:highway=` and `area=yes`
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Published using OSMCha: https://osmcha.org/changesets/83620071

Please don't add these `name=`. Put them in `description:en=` if you really want to.
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Published using OSMCha: https://osmcha.org/changesets/84662096

Use `covered=yes` on the road below. Don't tag the roof as `layer=1`.
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Published using OSMCha: https://osmcha.org/changesets/84638009

Also the classification is wrong.

This is considered part of the facility's access road, so `highway=service`.
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Published using OSMCha: https://osmcha.org/changesets/84588382

Wrong tagging of proposed feature
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/82553731

Wrong tagging of proposed features
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/82532735

Wrong tagging of proposed features
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/82533604

Please notice S5 road connecting.

U-turn slip follows higher classification like any other `*_link`

This configuration is discouraged.

There’s is no need to delete it. Just re-tag.

It is worth considering the entire Airport Rd, but again this hits the issue of directionality

Diverted route does t necessarily have to follow the higher claasification

It is possible for non-`=moroway_link` To be treated differently, with the `=trunk_link` beginning at the interchange merge/diverge. This considers the terminating road as the main line beginning there.

Actually if you want to model it this method, the entering `=motorway_link` should start at the diverge from exit to Hung Chi Rd. This raises the issue of directionality, as the exiting direction won’t be restricted.

Please check that this section is uncovered

That section is considered Sham among Rd (West Kowloon D1)

Aside from the issue of main line, some consider that a `=trunk` Or `=motorway` can begin before the sign.