Navigational lane guidance

摘要

Navigational lane guidance enhances a maneuver display by incorporating full display of available lanes in a freeway, when available in the map data. An otherwise regular turn icon display is replaced with a variable width image that grows to show all available lanes, highlighting lanes usable to complete a navigated maneuver. A new lane TrueType font displays the lane guidance image, with individual characters representing each possible line situation. Since TrueType fonts are vector-based, they can be used to generate the lane images at any size, in a platform-independent fashion. The lane font has direction arrows, which can be combined to form composite arrows; and additional direction arrows as needed to allow replacement of the routing icons currently in use. Lane dividers may also be implemented.

主权项

1. A method of providing navigational lane guidance, comprising:
counting a number of lanes available to a user device; determining if a navigated lane is on either side or in a middle of other available lanes; and building a variable width image with TrueType font, said variable width image growing in width based on TrueType font lane characters printed together therein to show all available lanes to provide navigational lane guidance regarding multiple possible lanes to be taken.