LIFESAVER!I've had a real nark at this app at times.....when I've been on single dirt track roads in the middle of nowhere trying to avoid major traffic to/from work. I've wondered if it's giving me the runaround BUT I was once sat next to a friend in traffic and decided to use Waze as the M25 was closed in both directions due to accidents. I got home but my friend was still sat in the same standstill position 30 minutes later when I called her. I've trusted it fully ever since!I've now used it in Italy, Switzerland, Spain.....its invaluable.