Yes, you can go through (specially designed) switches:
http://books.google.com/books?id=AZUEAAAAYAAJ&pg=RA6-PA244&dq=c.w.+hunt
The outside flanges indicate that the equipment was from a railroad that used the Hunt System. The wheels at CAMA came from a long gone power plant in Albany, New York. In the Hunt System, the outside flanges helped the cars go around curves, because one flange would ride on the head (on top) of the outer rail. This meant that tight turns could be negotiated without the wheels slipping as the greater diameter of the flange corresponded to the longer distance of the outer rail of the curve. The system was also less prone to derailments caused by the widening of the track gauge.