Abstract: A vehicle data retrieval system comprises a trailer and a data unit on the trailer. The data unit has access to vehicle information about the trailer and has a power input. A portable handheld computing device has a power output that powers the data unit through the power input and permits the retrieval of vehicle information from the data unit.

Abstract: A vehicle assistance request system includes a device and methodology for preventing inadvertent or mistaken assistance request calls. The system enables a vehicle driver to request roadside assistance with a single push of a button on a user interface module inside the vehicle or a remote, portable key fob. The data communication signal that is generated when the button is pushed communicates location information and the type of assistance that is needed to a dispatcher of the appropriate services. The system includes a timer function that requires that a user press a request button for a minimum time period before a request is initiated. Also provided is a protective shield, which further ensures that a request button is not pushed inadvertently.

Abstract: A vehicle assistance request system includes methodology for accurately and specifically identifying the vehicle location when a request is made. A written, textual description of the vehicle location, identifying streets, addresses, and other available information is provided to enhance the ability of the service provider to locate the vehicle. Further, response time is reduced and accuracy in locating a vehicle is increased. The method of this invention includes a multi-tiered decision process for determining where the vehicle is located.

Abstract: The present invention contemplates a preferred position for mounting an antilock control system that uses a single wheel speed sensor. The wheel speed sensor is mounted to sense speed of rotation of the main differential gear in a differential gear assembly and generates a wheel speed signal indicative of the average rate of rotation of at least two wheels of the vehicle. The sensing point is beyond the final reduction in gear ratios so as to eliminate any need to accommodate different axle ratios. The preferred mounting position also reduces velocity fluctuations caused by oscillations of the truck driveline. A microprocessor controller is mounted in close proximity to the wheel speed sensor so as to minimize the length of sensor leads and, hence, the susceptibility of the antilock controller to electromagnetic interference.