ISO 39001 vs ISO 45001: 5 Clear Differences for Fleets (2026)

ISO 39001 vs ISO 45001 is the question every fleet operator, logistics firm and public-sector transport department asks once it has an occupational health and safety management system and someone points out that most of its serious injuries happen on public roads. ISO 45001:2018 covers work-related road risk in principle — driving is work, a collision is a work-related injury, the hazard identification in clause 6.1.2 has to include it — but it gives no model for it.

ISO 39001:2012 is written for exactly that gap: a road traffic safety (RTS) management system built on the Safe System approach, with a clause 6.3 that names the performance factors an organisation can influence and a clause 6.4 that turns them into objectives. Both are harmonized-structure standards, both are certifiable, and for a fleet the sensible answer is rarely one or the other. This guide compares the two clause by clause, sets out the five differences that decide the choice, explains the edition position of each — ISO 45001 stable, ISO 39001 at working-draft revision — and shows how to run ISO 39001 inside an ISO 45001 system as one certification.

ISO 39001 vs ISO 45001 at a glance

The five differences that decide ISO 39001 vs ISO 45001

1. Who is in scope. ISO 45001 protects workers and people at the workplace. ISO 39001 covers everyone the organisation’s activity puts at risk on the road — the cyclist a delivery van hits, the passengers on a bus, the other driver — and organisations whose activity generates road traffic without owning vehicles. A school, a stadium or a distribution centre generating traffic is inside ISO 39001’s scope in a way ISO 45001 does not reach.
2. The model. ISO 45001 asks the organisation to identify hazards and apply the hierarchy of controls. ISO 39001 supplies the road-specific model: the Safe System approach, which assumes people make mistakes and are vulnerable and designs the system so that mistakes are survivable, and the three factor types — exposure, intermediate outcomes (speed, vehicle safety, driver fitness, restraint use, journey planning, road and route choice) and final outcomes. Our guide to RTS performance factors covers the model.
3. Worker participation. ISO 45001’s clause 5.4 is the requirement organisations most often underestimate: consultation and participation of workers, including non-managerial workers, in hazard identification, risk assessment, objectives and the audit programme. ISO 39001 has no equivalent clause; it relies on coordination (7.1) and communication.
4. Investigation. ISO 39001 dedicates clause 9.2 to road traffic crash and other road traffic incident investigation — every crash investigated against the factors. ISO 45001 requires incident investigation under 10.2 for all incidents, without the road-specific lines of enquiry.
5. Edition risk. ISO 45001:2018 is stable. ISO 39001:2012 has a revision at working draft, years from publication; the 2012 text is certifiable today, but documentation should cite principles and factors rather than clause numbers that may move. Our guide to ISO 39001 covers the revision status.

ISO 39001 vs ISO 45001: where they are the same

On ISO 39001 vs ISO 45001 the shared ground is most of the text. Clauses 4, 5, 6.1, 7, 8.1, 9.1, 9.3 or 9.4 and 10 are harmonized text in both, with OH&S or RTS wording: context, interested parties, scope, leadership, policy, roles, risks and opportunities, resources, competence, awareness, communication, documented information, operational planning, monitoring, internal audit, management review, nonconformity and improvement. An organisation certified to ISO 45001 has the machinery; ISO 39001 adds the factor analysis, the objectives, the road-specific controls and the crash investigation. The reverse is also true, and the integration is the reason most fleets end up with both. Our guide to ISO 45001 implementation covers the OH&S side.

Choosing between ISO 39001 and ISO 45001

ISO 39001 vs ISO 45001 resolved: one system

1. One context and scope statement naming road traffic activity — own fleet, grey fleet, contracted transport, site traffic — inside the OH&S scope.
2. One policy with the RTS commitments clause 5.2 of ISO 39001 requires; our guide to the fleet safety policy covers the wording.
3. Hazard identification (45001 6.1.2) that uses the ISO 39001 factors as the road-risk method: exposure measured, intermediate factors rated, controls chosen by the hierarchy.
4. One objectives register with RTS objectives (39001 6.4) alongside OH&S objectives (45001 6.2), each with a plan; our guide to road traffic safety objectives covers the road set.
5. Worker participation (45001 5.4) extended to drivers — driver forums, near-miss reporting, consultation on rosters and vehicles — which satisfies ISO 39001’s coordination expectations too.
6. One investigation procedure with the road-specific lines of enquiry (39001 9.2) — speed, fatigue, distraction, vehicle condition, journey design — built into the OH&S incident process.
7. One audit programme, one management review, one integrated certification audit under Global ACI-TECH-3-008 (formerly IAF MD 11).

Frequently asked questions

Does ISO 45001 cover driving for work?
Yes, in principle: driving is work and work-related road risk must be identified and controlled under clause 6.1.2. It gives no road-specific model, which is what ISO 39001 adds — the Safe System approach, the performance factors and road crash investigation.

Can we certify to ISO 39001 without ISO 45001?
Yes. ISO 39001 is a stand-alone certifiable standard. Organisations that generate road traffic without a workforce exposure — or whose road risk dwarfs everything else — sometimes hold it alone.

Is ISO 39001 being revised?
Yes. ISO 39001:2012 sits at stage 90.92 and ISO/WD 39001.2 is at working-draft stage, years from publication. The 2012 edition with its free 2024 amendment is the certifiable text; a system built on the Safe System approach will carry forward.

Which one do insurers and customers ask for?
Fleet customers and insurers increasingly name ISO 39001 for transport contracts; general employers, regulators and most tenders name ISO 45001. Fleets serving both audiences integrate.

Do we need worker participation for road safety?
ISO 45001 requires it (5.4) for the whole OH&S system, drivers included; ISO 39001 does not have the clause but expects coordination and communication. Driver participation in rosters, vehicles and near-miss reporting is the practical way to satisfy both.

Where this leaves you

Decide ISO 39001 vs ISO 45001 by asking whom the risk reaches. Workers in a workplace: ISO 45001. Everyone the organisation puts on the road, including the public: ISO 39001. A fleet with both: one system, the OH&S machinery carrying the road-safety model, one policy, one objectives register, one investigation procedure and one audit — with the road factors doing the work that the hierarchy of controls alone cannot.

References

• ISO 39001:2012 — Road traffic safety (RTS) management systems — Requirements with guidance for use — First edition, October 2012; Amd 1:2024; ISO/WD 39001.2 under development.
• ISO 45001:2018 — Occupational health and safety management systems — Requirements with guidance for use — First edition, March 2018.
• Global ACI-TECH-3-008 (M) — Audits of Integrated Management Systems — Formerly IAF MD 11; integrated audit time.

More on ISO 39001

• ISO 39001 vs ISO 45001 — you are here
• ISO 39001 explained
• RTS performance factors: clause 6.3
• Road traffic safety objectives: clause 6.4
• Fleet safety policy
• ISO 39001 certification cost

The RTS policy, the performance-factor and exposure analysis, the objectives register, the journey management and fatigue procedures and the crash investigation form — written to integrate with an ISO 45001 system — are in the ISO 39001 Road Traffic Safety Toolkit, or start with the free templates.