I think they mean turning left, cause otherwise there is no way to get to the northern section.

I'm not familiar with this area, so I went through the street side imagery.  I did not see any turn restrictions.  But based off the aerials it looks like people often park in the triangular section which while it might be legal to make the turn it might frequently be impossible.

Somebody local will need to make a judgement call to keep or delete the two way section joining them.