There are some good open-source apps for driving directions. The big problem with those apps is often the lack of a source for live traffic information, but the

There are some good open-source apps for driving directions. The big problem with those apps is often the lack of a source for live traffic information, but the government probably has something for that already, so hooking that up into an open-source app should be quite effective. Shouldn't be too hard to advertise an app if it means you see more green lights on your journey.