Let's be frank: most Windows Phone users already have some form of navigation on hand, whether it's Nokia's Here Drive+ beta or one of the alternatives. However, it rarely hurts to have a free choice like MapQuest's new app for Windows Phone 8. The suite offers voiced, turn-by-turn directions for driving and walking, along with live traffic and the usual point-of-interest searching. The app is comparatively basic, and it's only available in US English right now -- but if it's all you need to get from point A to point B, it's available at the source link.
(Disclaimer: AOL owns both MapQuest and Engadget)