NASHVILLE, Tenn. (AP) - The Tennessee Department of Transportation has launched a mobile app version of its SmartWay navigation tool. According to TDOT, the app helps drivers plan their routes with maps that show traffic speeds, crashes, road construction and road conditions. Users also can set up customized alerts for any problems that develop along a certain route, like their daily commute. The TDOT SmartWay App is free and available for download at the Apple Store or the Play Store for Android. TDOT asks motorists to use the SmartWay app responsibly by checking traffic conditions before they begin driving. More information is available at their Web site. Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.