I would think you would have all the proper street directions in most major cities listed by now.
My Iphone Garmin map/Your software has me turning southbound and head on into northbound oneway traffic in downtown Chicago on S. Franklin St. On the 300 south block to be exact.. However, on my Nuvi 3790T it calculates correctly . Google map shows the street oneway northbound but allows you to go south on it.
How can this be???