I lived in Tucson for two years (2010-2012) and commuted from Oracle and Hardy down to the university (roughly 6th and Euclid) during rush-hour three days a week. While the lack of a freeway was odd and people would whine about no freeway, traffic really wasn't that bad once you got used to it and figured out what streets to be on (1st to Orange Grove was much faster than taking Speedway to Oracle) and lane to be in and when. It might be worse going east, but coming from Oro Valley, I never saw any particular need for more road- it seemed like adding a freeway connection would be more for the sake of saying that there was a freeway than for any real reason. Having lived in places with congested freeways, I actually felt like having timed traffic lights was better and more efficient than sitting on a gridlocked freeway.