The present invention relates to a utility vehicle, in particular to a firefighting vehicle, including an aerial apparatus (i.e. a turnable ladder and/or an aerial rescue platform) and lateral ground supports movable between retracted positions and extracted operating positions in which the ends of the supports rest on the ground. The vehicle includes a monitoring system for monitoring the position of the vehicle. The system includes surveillance cameras at the sides of the vehicle, each camera being allocated to one support to monitor the ground area on which the end of this support rests in its operating position and to take a real-time image of the respective ground area. The system also includes a visual display presenting the images of all cameras at the same time in different screen areas, superposed by visual markings representing expected operating positions of the supports.