User's Manual

Appendix
87
• Before returning to a ground road after you have been
driving in an underground car park or a spiral path of the
multi-level car park, you will find that the floating point
may swing. When your car is in a rotary elevator, the
arrow of the floating point may not point to the right
direction.
• Providing voice prompt at a branching path ahead even
the car is already off the proposed route.
• Guiding distance may deviate.
When any of those situations occurs, the GPS satellite will auto-
matically adjust the current position fix if you keep driving.
Problems caused by map files:
• When you return from a road which is newly constructed
to a road recorded in map file, you may find floating point
swings due to the map file may not reflect the real road
conditions. After you keep driving for while, the system
will adjust it to the right position using GPS signal infor-
mation.
• No through-way due to road closure or pedestrian path.
• Open of a new road and closure of old road.
• Guide to a no-through way.
• Route re-computed again without changing the pro-
posed route.
• Guide to a normal road instead of a viaduct, or vice
versa.