UK Site Manager's Guide

Managing Mobile Plant On-Site: a practical guide for UK site managers

How to control mobile plant risk on a live UK site — covering CDM 2015 duties, HSG144 traffic management, PUWER 1998 inspections, competence assurance and the accredited training that backs it up.

What "managing mobile plant" actually means

Mobile plant is the single biggest cause of fatal injury on UK construction and industrial sites. "Managing" it isn't only about having a banksman — it's the system of permits, segregation, competence checks, inspections and incident response that surrounds every excavator, telehandler, dumper, MEWP and crane on the site. The site manager owns that system.

Four pieces of UK law and guidance frame the duty:

  • CDM 2015 — Principal Contractor must plan, manage and monitor construction work; includes vehicle and pedestrian segregation.
  • HSG144 'The safe use of vehicles on construction sites' — HSE's practical guidance on traffic routes, reversing, visiting drivers and signage.
  • PUWER 1998 — work equipment must be suitable, inspected and operated only by trained, competent persons.
  • LOLER 1998 & BS 7121 — lifting operations must be planned by a competent person, supervised, and carried out safely.

Traffic management & pedestrian segregation

Most serious incidents come from pedestrian/plant collisions, reversing or loss of visibility. A workable traffic management plan addresses: one-way routes where possible, hard segregation at access/egress points, controlled reversing zones with banksmen and reversing aids, signed visitor routes, and crossing points away from blind corners. Review the plan whenever the site layout, machine mix or shift pattern changes.

Operator competence & supervision

Under PUWER, "competence" means appropriate training, knowledge and experience for the specific machine. A CPCS or NPORS card is evidence — but the site manager must verify the operator has been trained on the actual machine and attachments in use, and remains competent (refreshers, near-miss reviews, supervised familiarisation after layout changes).

Permits, lift plans & exclusion zones

Non-routine lifts, work near services and proximity work all warrant a permit-to-work. Lift plans (LOLER / BS 7121) cover load, machine, ground, slinger and supervisor — and define the exclusion zone. Permits are only as good as the supervision behind them: the site manager owns sign-off, monitoring and lessons learned.

Incident response & near-miss reporting

A live near-miss system is the single most reliable predictor of zero-harm performance. Capture, triage, share lessons in toolbox talks within 48 hours, and feed structural fixes back into the traffic management plan and refresher training. Track trends quarterly.

Getting your team trained

We deliver an accredited Managing Mobile Plant course on your site — one day, built around your traffic management plan, machine mix and operator team. Successful candidates receive an accredited Managing Mobile Plant certificate. We also deliver the operator courses that sit beneath it (telehandler, MEWP, mobile crane, plant operator, banksman slinger).

Book Managing Mobile Plant training in your area

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Frequently asked questions

Who is responsible for managing mobile plant on a UK site?
Under CDM 2015 the Principal Contractor is responsible for planning, managing and monitoring construction work — including segregation of pedestrians and mobile plant. In practice this duty is delegated to the site manager or SHEQ lead, who must demonstrate competence in lift planning, supervision and traffic management.
What does HSG144 cover?
HSG144 'The safe use of vehicles on construction sites' is the HSE's core guidance on segregating pedestrians and mobile plant, designing safe traffic routes, controlling reversing and managing visiting drivers. It is the practical companion to the legal duties in CDM 2015 and PUWER 1998.
Do site managers need a separate Managing Mobile Plant qualification?
There is no single statutory ticket, but auditors and energy-sector clients expect documented, accredited training in mobile plant supervision. A one-day Managing Mobile Plant course gives supervisors a defensible record covering traffic management, competence checks, permits and incident response.
How often should mobile plant supervision training be refreshed?
Most operators run refreshers every 3–5 years, or sooner after a near-miss, an audit finding, or a change in site layout or fleet. Refreshers are typically half-day and can be combined with toolbox talks for the operator team.
Can this training be delivered on-site in Aberdeenshire?
Yes. Logan Plant Training delivers Managing Mobile Plant courses on your yard or live site across Aberdeenshire and North-East Scotland, using your own traffic management plans and machine mix so the learning maps directly to the operation.