A multi-window vehicular monitoring system has a data collection assembly, a console unit and multiple video cameras. The data collection assembly uses RF signal transmission to send distance data, and the console unit is further connected to a monitor and several video cameras. The system employs an image overlay controller to correlate the distance data and images to produce single-channel or multiple-channel video signals. With a continuous display of video images from all angles and constantly updated distance data, the vehicle driver becomes more aware of conditions around the vehicle at any given time. Thus no blind spots exist for the driver around the vehicle. Using such a monitoring system, a driver's visibility and safety can be considerably enhanced under all driving conditions.