What the regulation actually requires

Regulation 8.10 of the Mine Health and Safety Regulations places a duty on every mine to take reasonably practicable measures to prevent persons being injured by collisions — TMM-to-TMM and TMM-to-pedestrian. The step that changed the market is the requirement for automatic machine intervention: sub-regulations 8.10.1.2(b) and 8.10.2.1(b) became effective on 21 December 2022. For underground diesel-powered TMM, the machine must automatically detect a pedestrian in its vicinity, warn both the operator and the pedestrian, and — critically — if no action is taken, provide further means to retard the machine to a safe speed and then automatically apply the brakes.

That last clause is the whole game. A system that only beeps is no longer enough. The law now expects the machine to act when a human doesn't.

The bar in one line: detect → warn → intervene. If a vendor's system stops at "warn" (lights and alarms), it does not meet the EMESRT Level 9 intervention requirement that regulation 8.10 is built around. Insist on the machine-intervention layer.

EMESRT Level 9 — the standard behind the law

The regulation is underpinned by the Earth Moving Equipment Safety Round Table (EMESRT) nine-level control hierarchy. Levels 1–8 cover site design, training, operating procedures, awareness and warning. Level 9 is the intervention control: an automated machine response that prevents the unsafe interaction when every prior control has failed. South Africa's adoption of Level 9 into law is what obliges mines to fit a proximity detection system (PDS) capable of actually controlling the machine, not just alerting the operator.

Understanding the hierarchy matters because compliance isn't only a box of electronics — it's the full stack: good traffic management and training (the lower levels) plus a working PDS intervention (Level 9). A mine that buys the hardware but neglects the procedures around it is exposed; so is one with great procedures and no intervention layer.

The compliance path (step by step)

  1. Risk-assess your TMM interactions. Map every place machines and people meet — tips, loading bays, ramps, intersections, travelways — and rank the collision risk, surface and underground.
  2. Specify to EMESRT Level 9. Write the detect–warn–intervene requirement into your specification so vendors are measured against the law, not against the cheapest "warning-only" box.
  3. Choose detection proven for your environment. Underground is brutal on sensing — dust, water, curves, dips, and metal that reflects and confuses signals. Detection that works on a clean open-pit haul road may misbehave in a stope. Demand evidence from comparable conditions.
  4. Integrate the machine-intervention layer. The PDS has to talk to the TMM's controls so it can retard and brake the machine. This integration with the vehicle is where many projects underestimate the engineering — plan for it.
  5. Add monitoring, logging and reporting. Every detection and intervention event should be logged and reportable — both to prove compliance to the inspectorate and to learn where your real risk hotspots are.
  6. Train, trial and maintain. Run a trial section, train operators and pedestrians (false confidence is its own hazard), then maintain and audit the system. A PDS that drifts out of calibration is a compliance and safety failure waiting to happen.

How to choose a system that actually works

  • Does it intervene, or only warn? Level 9 means the machine acts. This is the single most important question.
  • Is it proven in your conditions? Underground dust and geometry break naive detection. Ask for results from a mine like yours, not a brochure render.
  • Does it produce compliance evidence? You need event logs and reports, not just an in-cab buzzer, to demonstrate due diligence.
  • Can it integrate with your fleet and your other safety/monitoring systems? A PDS that feeds the same platform as your person-location and occupational-hygiene monitoring gives you one safety picture, not three silos.
  • Is it supported locally? A safety-critical system needs fast local support and maintenance — not a vendor a continent away.

This is core to how addanode approaches mining operations optimisation: MHSA-aligned collision prevention and proximity detection, integrated with the machine and feeding a monitoring layer that logs every event for compliance and risk analysis. Because we build both the hardware and the addaNet platform in-house and support it locally, collision prevention can sit alongside person-location and occupational-hygiene data in one picture — and it's engineered for real South African underground conditions, not imported assumptions.

This guide summarises the regulatory framework for orientation; always confirm current requirements and effective dates against the latest Mine Health and Safety Regulations and your appointed legal and safety advisers.

Frequently asked questions

What does MHSA regulation 8.10 require for collision prevention?

It requires mines to take reasonably practicable measures to prevent collisions between trackless mobile machinery and between TMM and pedestrians. For underground diesel TMM, the system must automatically detect a pedestrian, warn both operator and pedestrian, and — if no action is taken — slow the machine and apply the brakes automatically. The intervention sub-regulations became effective on 21 December 2022.

What is EMESRT Level 9 and why does it matter?

EMESRT defines a nine-level control hierarchy for vehicle interactions. Level 9 is the intervention control — an automated machine response that prevents an unsafe interaction when all earlier controls have failed. South Africa's adoption of Level 9 is what obliges mines to fit a proximity detection system that can control the machine, not just alert the operator.

Is a warning-only system enough to comply?

No. A system that only sounds an alarm or flashes a light meets the lower EMESRT levels but not the Level 9 intervention requirement underpinning regulation 8.10 for underground TMM. The machine must be able to retard and brake automatically if no one acts. Always confirm the intervention capability before buying.

Why is underground detection harder than surface?

Underground conditions — dust, water, tight curves, dips and reflective metal surfaces — confuse detection that works fine on an open-pit haul road. Choose proximity detection with proven performance in conditions comparable to your own workings, and trial it in a section before fleet-wide rollout.

Does collision prevention connect to our other safety systems?

It should. Integrating the PDS with a monitoring platform that also handles person-location and occupational-hygiene data gives you one safety picture and one set of compliance reports, rather than three disconnected systems. That also makes it easier to find and act on your real risk hotspots.