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    Tier IV–Komatsu quarry truck autonomy: key design and safety notes for engineers

    November 13, 2026|

    Reviewed by Tom Sullivan

    First reported on International Mining – News

    30 Second Briefing

    Tier IV has started joint development with Komatsu on autonomous driving systems for three quarry-class dump truck models, targeting deployment at quarrying and civil engineering sites in Japan and North America. The work, led through Tier IV subsidiary EARTHBRAIN Inc, builds on a collaboration with Komatsu that began in September 2025 and aims to move beyond mine-haul fleets into smaller, mixed-traffic operations. For operators, the project signals upcoming autonomy options on rigid trucks and articulated dump trucks suited to short-haul quarry cycles and tighter benches.

    Technical Brief

    • Deployment focus on quarrying and civil engineering sites implies mixed traffic with light vehicles and construction plant.
    • Japan and North America roll-out requires compliance with differing regional mobile equipment and traffic safety regulations.
    • Autonomy on shorter quarry cycles is likely to reduce operator exposure to bench-edge and tip-head hazards.
    • Mixed-fleet environments will demand robust perception and fail-safe stopping logic for unplanned human and plant interactions.
    • Integration with Komatsu platforms should enable OEM-level interlocks, e‑stops and health monitoring for autonomous modes.
    • For other quarries, the project signals a shift from isolated autonomous mine fleets to complex, semi-public work zones.

    Our Take

    The extension of Komatsu Europe’s 3D Machine Guidance Flex to dump trucks and mixed fleets, noted in our October 2026 coverage, suggests that Tier IV’s autonomous systems for quarry-class rigid trucks and ADTs are likely to be deployed into an ecosystem already primed for digital guidance and remote operation rather than as a standalone add-on.

    With 2,518 tag-matched pieces under Projects/Product/Safety, autonomy work with Tier IV and EARTHBRAIN in Japan and the United States positions Komatsu at the more advanced end of safety-driven fleet automation in our database, compared with many OEM stories that still focus mainly on fuel efficiency or basic machine control upgrades.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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