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Originally Posted by Anglika  In AmE, "turn right on xx Ave" means to turn right onto xx Ave.
"Turn right at xx AVe" means that when you reach xx Ave, you turn right. |
Another usage (American for now, but in principle it could be adopted into Br E) is 'turn right on red', where the 'on' is an adverb of time [=when the light is red]. In the UK, if we ever adopted it, we'd lose the alliteration - 'left on red'.
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