Preferably, the mobile device 150 makes use of two embedded or downloaded applications or software components, each designed to handle and make use of the data or communications made by the control device 75. First, one application or software component is preferably designed to process the two or more different audio signals that are transmitted by the control device 75 directly or that the control device causes to be transmitted over the vehicle sound system. Using audio detection, filtering, and digital processing techniques, this first application is able to determine the approximate location of each such mobile device within the vehicle (i.e., whether or not such mobile device is located within the driver space or quadrant of the vehicle). In preferred embodiments, the first application is also able to determine when the mobile device is not within the driver space or quadrant of the vehicle, but is positioned or oriented in a manner that it can still be used, viewed, or accessed by the driver in such a way that it could still distract the driver while driving. The second application or software component, whether being run on a mobile device or by the vehicle itself, is preferably designed to receive the vehicular status data from the control device 75 and then respond accordingly—based primarily upon the specific one or more applications 190 for which the system is intended to be used. Additionally, in many situations, the second application or software component will also make use of the mobile device location information (and driver identification) determined by the first application or software component. For example, the second application or software component can be configured to block or limit specific functionality of the mobile device to reduce the risk of distracted driving, but only when the device is in the driver space or quadrant.