Garmin DRIVE50LMUS 5" Drive 50LM Navigation System provides driver alerts to encourage safer driving and increase situational awareness. Warnings include alerts for sharp curves, speed changes, railroad crossings and animal crossings. Additionally, Garmin Drive 50 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. 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.