Pioneer AVIC-EVO1 Operation Manual page 69

Appendix
If you make a slight turn.
If there is a parallel road.
If there is another road very nearby, such as in the case of an
elevated motorway.
If you take a recently opened road that is not on the map.
If you drive in zigzags.
If the road has a series of hairpin bends.
If there is a loop or similar road configuration.
If you take a ferry.
If you are driving on a long, straight road or a gently curving
road.
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