Near where I grew up, my AVIC-Z1 wanted me to deliberately go down a 1 way street the wrong way and even told me to make a U-turn when I ignored it. When using it in an area where I was unfamiliar, it had me take a road that dead-ended at a railroad for YEARS, according to one local resident. Apparently, the GPS map had a continued line for that road and never segmented it for the railroad, even though railroad track lines were put there, so the GPS assumed it was a RR crossing, when it was not. I had to turn around and wasted time. It also tells me (in audito) to go West on I-795 to head toward Baltimore but indicates that I need to go East. You can't trust these units with your life.