A vehicle operating system (10) for controlling operation of a vehicle (12) in an area (26) in which a safe working area (SWA) (30) is demarcated includes a periphery generator module (22) for generating a periphery of a zone of interest about the vehicle (12) and to output zone data. A scanning arrangement (36) is mountable to the vehicle (12) for scanning a region about the vehicle (12), including the zone of interest, for obstacles, the scanning arrangement (36) outputting obstacle data. A processing module (20) is responsive to the zone data, the obstacle data and SWA data relating to the SWA (30) to determine if a detected obstacle is within both the SWA (30) and the zone of interest. The processing module (20) causes action to be taken regarding further traversal of the area (26) by the vehicle (12) depending on whether or not both conditions are satisfied.