! If the road has a series of hairpin bends.
! If there is a loop or similar road configura-
tion.
! If you take a ferry.
! If you are driving on a long, straight road or
a gently curving road.
! If you are on a steep mountain road with
many height changes.
! If you enter or exit a multi-storey parking lot
or similar structure using a spiral ramp.
! If your vehicle is turned on a turntable or si-
milar structure.
! If trees or other obstacles block the GPS
signals for a considerable period.
! If you drive very slowly, or in a start-and-
stop manner, as in a traffic congestion.
! If you join the road after driving around a
large parking lot.
En
67
Appendix
Appendix
Appendix