According to the National Highway Traffic Safety Administration explain, three of the riskiest driving behaviors are hard acceleration, hard deceleration, and hard swerves. The app is linking to the OBD of your vehicle and via BT3647 device providing real-time information that you need to know including speed, rpm, battery voltage, engine coolant temperature, fuel level,engine loading etc...In addition, based on the data including harsh acceleration, braking and cornering. The app will rate safety score of your driving behavior. It also provide fuel consumption, speeding alert, it is able to remind driver how fuel-efficient driving, and collect heavy duty vehicles's FMS data, SMS of GPS location and car information.
The BT3647 is a Bluetooth interface interpreter supports J1939 and J1708 protocol. The APP can be executed in the background to communicate with the device. The device will automatically shut down once you leave car. In general, the iOS is able to launch blue tooth device automatically, if you already have paired the device and turn it on.