While driving , listen to the voice instructions as much as possible and glance at the screen briefly and only when it is safe . However , do not totally rely on voice guidance . Use it just for reference . If the system cannot determine the current position correctly , there is a possibility of incorrect , late , or non-voice guidance .
The data in the system may occasionally be incomplete . Road conditions , including driving restrictions ( no left turns , street closures , etc .) frequently change . Therefore , before following any instructions from the system , look to see whether the instruction can be done safely and legally .
This system cannot warn about such things as the safety of an area , condition of streets , and availability of emergency services . If unsure about the safety of an area , do not drive into it . Under no circumstances is this system a substitute for the driver ’ s personal judgement .
Use this system only in locations where it is legal to do so . Some states / provinces may have laws prohibiting the use of video and navigation screens next to the driver .