The dezl, an over-the-road trucking-specific navigation unit, has a bui
lt-in loudspeaker, five-in. display screen, trucking-related points of interest and customizable points-of-interest ratings. The unit comes with a built-in National Truck and Trailer Services Breakdown Directory with more than 30,000 repair and towing services. It can log hours, fuel and mileage records and has predictive routing, realistic arrival time and recommended routes based on historical traffic data and trends.