According to the AASHTO Green Book (the ultimate definition in the US), an expressway is a road with access control (no driveways), but traffic lights. A freeway has no cross traffic. Some states use that definition, and in some expressway=freeway. In NYC there is even a Rockaway Freeway with traffic lights! The west seems to use the official definition, and in the east the other definition is grandfathered in. For example the San Tomas Expwy runs north-south thru http://www.thomas.com/cgi-bin/TgdePoiServer.asp?Area=Bay+Area+Metro+2000&Region=5&PointX=1430000&PointY=2650000&SizeX=1000&SizeY=1000&Radius=5000 . Look at a good road atlas. There are many others in San Jose.