The invention relates to a safety net system comprising a load indicating device (25) which signals to the user that forces have acted on the safety net which may have caused preliminary damage. The load indicating device (25) interacts with the anchoring members (21) by means of which the front edge of the safety net is anchored in the vehicle. The load indicating device (25) makes use of the deformation of said anchoring elements (21) in such a way that any deformation of the anchoring elements (21) exceeding a certain threshold, irrespective of whether it is permanent or elastic, causes a signalling member (42) to break out of its resting position.