Few regulations have reshaped South African mining operations as directly as the trackless mobile machinery (TMM) collision-prevention requirements in Chapter 8 of the Mine Health and Safety Act. The key sub-regulations — 8.10.1.2(b) and 8.10.2.1(b) — came into operation on 21 December 2022, with no transitional period. For any mine running diesel-powered TMMs underground, collision prevention is now a legal duty, not a best practice.
This guide explains what Regulation 8.10.1 requires, why the final step is the hardest to achieve, and what to look for in a compliant system.
What MHSA Regulation 8.10.1 requires
In summary, Regulation 8.10.1.2(a) requires that all underground diesel-powered trackless mobile machines be provided with a means to automatically detect the presence of any pedestrian in the vicinity. When a pedestrian is detected, both the machine operator and the pedestrian must be warned of each other’s presence. And critically, if no action is taken to prevent a potential collision, a further means must automatically slow the machine to a safe speed and then apply its brakes.
In other words, a compliant solution has three layers:
- Detection — reliably sensing pedestrians (and other vehicles) around the machine.
- Warning — alerting the operator and the pedestrian effectively, in time to react.
- Automatic intervention — if no one reacts, slowing the machine and applying the brakes without human input.
That third layer — automatic vehicle intervention, often described as the highest level of control effectiveness — is what makes this regulation demanding. This is a plain-language summary; operators should work from the regulation itself and their own risk assessment.
Why the compliance bar is higher than it looks
Detection and warning are well understood. The difficulty is the leap from warning the operator to the machine acting on its own. Meeting 8.10.1 in full means:
- Reliable detection in real mining conditions. Dust, water, curves, ramps, intersections and line-of-sight obstructions all make pedestrian detection harder underground than in a test bay. False alarms are as damaging as missed detections, because operators quickly learn to ignore systems that “cry wolf.”
- Distinguishing people from the environment. A system must separate a pedestrian from walls, equipment and other machines — consistently.
- Integration with the machine’s controls. Automatic slowing and braking requires the detection system to talk to the TMM’s own control and braking systems safely. This integration — across mixed fleets of different makes, ages and OEMs — is where many deployments stall.
- Intrinsic safety and certification. Underground electronics in hazardous atmospheres typically need recognised explosion-protection certification before they may be used at all.
- Evidence and maintenance. A compliant system has to be tested, maintained and documented — and able to demonstrate that it works.
The practical takeaway: many systems can detect and warn, but full compliance hinges on dependable detection and safe automatic intervention and certification and upkeep — together. That is a much smaller field of genuinely compliant solutions than the marketing suggests.
A procurement checklist for 8.10.1
- Does the system reliably detect pedestrians in your actual underground conditions, with an acceptable false-alarm rate?
- Does it warn both the operator and the pedestrian effectively?
- Can it deliver automatic slowing and braking — not just an alert — and integrate with your machines’ controls?
- Will it integrate across your mixed TMM fleet and OEMs?
- Does the hardware carry the certification required for your underground atmosphere?
- Is there a documented testing, maintenance and record-keeping regime?
How addanode approaches collision prevention
addanode works with mines to understand what Regulation 8.10.1 actually demands — especially the gap between warning and the automatic vehicle intervention the regulation ultimately requires — and to help operators evaluate and deploy a solution that fits their fleet and conditions. Because compliance here depends on detection quality, machine integration, certification and maintenance working together, we focus on the whole system rather than a single sensor. You can read more about our broader mining IoT and condition monitoring work, or talk to us about your fleet.
Frequently asked questions
What does MHSA Regulation 8.10.1 require?
It requires underground diesel-powered trackless mobile machines to automatically detect pedestrians, warn both the operator and the pedestrian, and — if no preventive action is taken — automatically slow the machine to a safe speed and apply its brakes.
When did the TMM collision-prevention requirements take effect?
The key sub-regulations 8.10.1.2(b) and 8.10.2.1(b) came into operation on 21 December 2022, with no transitional period.
Is a warning system enough to comply?
No. Detection and warning are necessary but not sufficient. The regulation also requires automatic intervention — slowing and braking the machine — when no action is taken to prevent a collision.
Talk to addanode about TMM collision prevention
The hardest part of 8.10.1 is turning detection into safe, automatic action across a real mixed fleet. To discuss what a compliant approach looks like for your operation, contact the addanode team.
This article is part of addanode’s South African compliance series. See also: MHSA 16.7 and missing person locator systems, real-time occupational hygiene monitoring in mines, and effluent monitoring and DWS compliance.
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