I have Telenav on my AT&T phone. Its traffic avoidance feature can take you WAY out of the way.
For instance, I used to go from the Westminster Promenade area (US 36/104th) to I-70/Tower every day. Normally, I'd go down US 36 E, to I-270 E, to I-70 E, to Tower. The phone once took me down 104th, east all the way to E-470 (on 104th

), south on E-470 to Pena, Pena to Airport Blvd, Airport Blvd to I-70 to Tower. In other words, a big unnecessary circle. No thanks.
From then on, I decided to use my own intuition when deciding to avoid traffic.
