Prolec joins Trimble ecosystem: motion‑inhibit safety explained for UK project teams
Reviewed by Joe Ashwell

First reported on The Construction Index
30 Second Briefing
Prolec’s SiteGuard Pro virtual barrier system is now integrated into Trimble Earthworks, combining a height and slew limiter with automatic motion‑inhibit to stop excavators when 3D site‑referenced ceilings, walls, floors or surfaces are at risk of being breached. Avoidance zones can be defined in Trimble Business Center and enforced directly from the Earthworks cab display, preventing boom, stick, bucket and counterweight from entering restricted envelopes during normal excavation workflows. The system targets high‑risk environments such as nuclear sites, work near overhead cables and high‑value infrastructure, enabling contractors to meet motion‑inhibit tender requirements in the UK.
Technical Brief
- SiteGuard Pro now runs natively inside the Trimble Earthworks platform as a third‑party application.
- All safety controls are accessed via the existing Trimble Earthworks cab display, avoiding separate hardware interfaces.
- Virtual avoidance zones are authored in Trimble Business Center, then synchronised to machines as digital “safety nets”.
- Integration gives planners, surveyors, designers, safety managers and operators a single, shared model of restricted zones.
- Motion‑inhibit capability allows UK contractors to satisfy tender requirements where certified inhibit systems are mandated.
- Target use cases include nuclear power stations, work adjacent to high‑value infrastructure and close to live traffic.
- First commercial orders and installations are already operating on several prominent UK construction sites, providing early field validation.
Our Take
Trimble Earthworks has been a recurring anchor in recent Software coverage, from the new SketchUp Pro Civil Contractor workflow (17 Aug 2026) to factory‑fitted systems on Hitachi excavators (18 Mar 2026), so Prolec’s integration into this ecosystem effectively plugs a specialist safety/control layer into an already standardising 3D machine‑control stack.
UK civil contractors such as Kilmac and Wills Bros are already standardising on Trimble survey and machine‑control hardware for major schemes like the A9 dualling, which suggests Prolec’s alignment with Trimble Business Center and Earthworks could accelerate adoption of its safety functions on large public‑infrastructure projects in the UK.
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.
Related Articles
Related Industries & Products
Construction
Quality control software for construction companies with material testing, batch tracking, and compliance management.
Mining
Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.
QCDB-io
Comprehensive quality control database for manufacturing, tunnelling, and civil construction with UCS testing, PSD analysis, and grout mix design management.


