It highlights the way East Europeans repair roads (4,4)

I believe the answer is:

pole star

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'it highlights the way east' is the definition.
The definition suggests a singular noun which matches the answer.

'europeans repair roads' is the wordplay.
'europeans' becomes 'Poles' (Pole is an example).
'repair roads' becomes 'tar' (I can't justify this - if you can you should believe this answer much more).
'poles'+'tar'='POLE STAR'

Can you help me to learn more?

(Other definitions for pole star that I've seen before include "Part of the Little Bear" , "Polaris" , "A guiding principle" , "Point in the night sky sought by navigators" , "Guide for sailors" .)

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

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