Garmin DriveSmart GPS navigator provides driver alerts to encourage safer driving and increase situational awareness. Warnings include alerts for sharp curves, speed changes, railroad crossings, animal crossings and more. Additionally, Garmin DriveSmart notifies you when driving the wrong way on a one-way street and sends warnings for nearby school zones. Receive alerts for nearby red light and speed cameras and be prepared for sudden halts in traffic with upcoming traffic jam alerts. For longer drives, a fatigue warning suggests break times and potential rest areas after hours of driving. The Up Ahead feature lets you easily see places up ahead and milestones along your route, without leaving the map view. Battery doesn't work must be plugged in.