Well, not so much odd but rather in this case, just plain wrong. Here is the corner of Market and York Streets in the City. Market Street is one-way traffic from Elizabeth Street to York Street, only becoming two way from York Street down to Sussex Street.
So, what is unusual I hear you say. What you can see here is the one-way part of the street and all traffic would be coming towards the camera. Of course, the traffic sign suggest something different. It says that all traffic must turn right except for buses and construction vehicles, suggesting that they can therefore travel the wrong way down the one-way section of Market Street.