Controls include working in pairs where risk is high, workplace layout and design to reduce violence (barriers, monitored CCTV, visibility), a communication system suited to distance and environment, movement records such as call-in systems or satellite tracking with distress functions, training for working alone including dealing with aggression, using communications, first aid, obtaining emergency help, off-road driving and bush survival, and first aid arrangements under the WHS Regulations. A telephone suffices if the worker can reach it in an emergency; otherwise personal security or duress systems (some with non-movement sensors), radio, satellite phones, distress beacons (EPIRB, ELT, PLB) or mobile phones with confirmed coverage, charged batteries and a spare should be used.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.