Improve rendering for `highway=busway`

[kolgza]

[A67-A67]

I'd like to give an example of this issue.

This busway is rendered as a very thin, almost invisible line. In reality this is a very prominent feature in the urban landscape.

Note that highway=busway is an approved feature, that has passed the proposal process.

[hanifalhusaini]

It should be rendered at least as wide as highway=service.