If you have never heard of crowd sourced maps, checkout our previous blog post here or an example of a growing Philippine map in timelapse.
At Nokia world 2009, Navteq announced they will be crowdosourcing map, routing, and traffic data. Twice has a good overview. Also see a recent Google's blog entry about google's crowd sourcing strategy.
jKontherun reports that iphone users can utilize but aren't contributing to Google's arterial data. Google was quoted as saying “The Google Maps application that comes pre-installed on the iPhone can display live traffic, but Apple devices do not participate in the traffic crowdsourcing.”
Talk about this on our forums
Navit is an open source turn by turn directions app using the free Open Street Maps.
It is important to note that both the app and the routing engine, along with the map data are all Open Source!
The app is in beta still and can be downloaded using Cydia.
Add this source http://szndvc.dyndns.org/cydia/
and then search for "navit"
You need a planet.bin file of the Open street maps data. You can use this http://maps.navit-project.org/planet.bin but they have a tool that lets you select a portion of the map to download.
That file will go on your iPhone at var/mobile/Media/Maps/planet.bin
Updated 09-17-2009 at 02:57 PM by optikalefx