Crossword Genius

It ought to be soundly curbed for safety (7)

Ross

I believe the answer is:

roadway

I'm a little stuck... Click here to teach me more about this clue!

This could be a double definition.

'it ought' is the first definition.
The definition suggests a singular noun which matches the answer.

'soundly curbed for safety' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?

'to be' is the link.

Can you help me to learn more?

(Other definitions for roadway that I've seen before include "Part of street for traffic" , "Traffic surface" , "Thoroughfare" , "On which vehicles travel" , "Surface travelled over" .)

I've seen this clue in The Globe and Mail.
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