Crossword Genius

On escalator under Birmingham Station, see date's determination?

Ross

I believe the answer is:

new style

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'on escalator' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

I don't understand how the rest of the clue works.

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(Other definitions for new style that I've seen before include "that was seen as a time-waster in 1752?" , "Method of dating used since 1582 - we sly ten (anag)" , "Gregorian mode" , "Latest fashion" .)

I've seen this clue in The Telegraph.
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