Chain of Responsibility Law in SA: HVNL Duties, Prosecutions and Defence
Chain of responsibility law in South Australia
When the National Heavy Vehicle Regulator investigates a transport business, the questions reach the operator, the schedulers, the loaders and the executives as well as the driver. Talon Legal advises and defends parties in the chain of responsibility across South Australia, from the first information request to a Category 1 prosecution. Every hour matters: book a same-day free 30-minute consultation or call (08) 7094 2021 now.
Chain of responsibility snapshot
| Issue | Position in South Australia |
|---|---|
| Governing law | Chapter 1A of the Heavy Vehicle National Law (sections 26A to 26H), applied in South Australia by the Heavy Vehicle National Law (South Australia) Act 2013 (SA). |
| Who owes the duty | Ten parties: employer, prime contractor, operator, scheduler, consignor, consignee, packer, loading manager, loader and unloader (section 5). |
| The primary duty | To make sure, so far as is reasonably practicable, of the safety of the party's transport activities relating to the heavy vehicle (section 26C). |
| Executives | Must exercise due diligence to make sure the entity complies with its safety duties, and can be convicted whether or not the entity is prosecuted (section 26D). |
| Categories of offence | Category 1 (reckless exposure to risk of death or serious injury or illness), Category 2 (exposure to that risk) and Category 3 (failure to comply with the duty) (sections 26F to 26H). |
| Maximum penalties | Up to $436,850 or 5 years imprisonment for an individual, and $4,230,550 for a corporation, for a Category 1 offence (1 August 2026 to 30 June 2027). |
| Prohibited requests | Asking, directing or requiring a driver or party to speed, drive while impaired by fatigue or unfit, or breach work and rest hours, or contracting for that effect, carries $28,230 (section 26E). |
| Which court | Category 1 offences are indictable and section 707 decides whether they stay in the Magistrates Court; other categories are dealt with summarily. |
| Evidence the court may use | The Regulator's codes of practice (section 632A) and, from 1 August 2026, an approved audit of the operator's safety management system (section 632B). |
| First step | Same-day free 30-minute consultation. Call (08) 7094 2021. |
Charged with a chain of responsibility offence, or under investigation?
Chain of responsibility law in South Australia is the set of duties in Chapter 1A of the Heavy Vehicle National Law (the Law). It makes the safety of heavy vehicle transport the shared responsibility of everyone in the chain, and it reaches executives personally. This page states the Law as it stands after the amendments of 1 August 2026.
This guide is part of our heavy vehicle offences practice. Related guides cover fatigue and work diary offences, mass, dimension and loading offences, heavy vehicle speeding and truck driver licence appeals.
Free Consultation. Talk to a lawyer before you answer an information requirement or attend an interview. Book a same-day free 30-minute consultation or call (08) 7094 2021.
On this page
- Who is a party in the chain of responsibility?
- What is the primary duty?
- What are Category 1, 2 and 3 offences?
- What duty do executives have?
- What requests and contracts are prohibited?
- What evidence can be used?
- How are breaches enforced?
- What are the penalties?
- How similar matters tend to play out
- How we defend a chain of responsibility matter
- Case law
- Frequently asked questions
Who is a party in the chain of responsibility?
Section 5 names ten parties for a heavy vehicle. They are the employer of an employed driver and the prime contractor of a self-employed driver. They are the operator and the scheduler. And they are the consignor, consignee, packer, loading manager, loader and unloader of any goods in the vehicle. A person can fill more than one role. A driver is a party only by also filling one of them.
Chain of responsibility law looks at what each person actually does. Responsibility follows the function, not the title. The safety of transport activities is the shared responsibility of every party, and the level and nature of each party’s responsibility depends on the functions the person performs, whether exclusively or occasionally, rather than the person’s job title or the functions described in a written contract (section 26A). It also depends on the nature of the public risk and the party’s capacity to control, eliminate or minimise it.
Duties overlap. A person may have more than one duty, more than one person can have the same duty at once, and each must comply even if another duty holder has the same duty (section 26B). Each discharges the duty to the extent of the person’s capacity to influence and control the matter.
What is the primary duty?
Each party in the chain of responsibility must make sure, so far as is reasonably practicable, of the safety of the party’s transport activities relating to the vehicle (section 26C(1)). In particular, each party must, so far as is reasonably practicable, eliminate public risks or, where that is not reasonably practicable, minimise them (section 26C(2)(a)). Each party must also make sure its conduct does not directly or indirectly cause or encourage a breach. That covers the driver contravening the Law or exceeding a speed limit, and another person contravening the Law (section 26C(2)(b)).
Conduct is read widely. It includes asking, directing or requiring another person to do or not do something, and entering into a contract for another person to do or not do something, or one that purports to change the effect of the Law (section 26C(3)).
What is reasonably practicable is defined in section 5. It is what is, or was at the time, reasonably able to be done, weighing up all relevant matters. Those include the likelihood of the risk and the harm that could result. They include what the person knows, or ought reasonably to know, about the risk and the ways of removing or minimising it. They also include the availability and suitability of those ways, and whether their cost is grossly disproportionate to the risk.
What are Category 1, 2 and 3 offences?
Under chain of responsibility law, a breach of the primary duty is prosecuted as one of three categories of offence. The amounts below are the Regulator’s published maximums for 1 August 2026 to 30 June 2027.
| Category | What the prosecution must prove | Individual | Corporation |
|---|---|---|---|
| Category 1, section 26F | A safety duty, conduct engaged in without reasonable excuse that exposes an individual to a risk of death or serious injury or illness, and recklessness as to that risk | $436,850, 5 years imprisonment, or both | $4,230,550 |
| Category 2, section 26G | A failure to comply with the duty that exposes an individual, or a class of individuals, to a risk of death or serious injury or illness | $212,090 | $2,120,880 |
| Category 3, section 26H | A failure to comply with the duty | $70,580 | $705,820 |
For a Category 1 charge, the prosecution bears the burden of proving that the conduct was engaged in without reasonable excuse (section 26F(2)). Category 1 offences are indictable (section 5). Section 707 lets them be heard summarily, with exceptions. The Magistrates Court must not hear the charge summarily if the defendant asks at the start for prosecution on indictment. Nor may it do so if it is satisfied the defendant may not be adequately punished on a summary conviction, or on a defence application for exceptional circumstances. In Pentland Concrete v NHVR the Supreme Court held that the adequate punishment bar applies before and after conviction, and that the committal procedure then applies even after a guilty plea ([55], [61], [63]).
Categories 2 and 3 are not indictable, so a proceeding must start within 2 years after the offence, or within 1 year after it comes to the complainant’s knowledge but within 3 years after the offence (section 707A).
What duty do executives have?
An executive of a legal entity that has a safety duty must exercise due diligence to make sure the entity complies with that duty (section 26D(1) and (1a)). An executive is an executive officer of a corporation, a partner in an unincorporated partnership, or a management member of an unincorporated body. The executive can be convicted even if the entity has not been proceeded against or convicted (section 26D(2)), and the duty does not apply to an executive acting as a volunteer (section 26D(2a)).
Due diligence has a defined content in section 26D(3). It includes taking reasonable steps to keep up to date with the safe conduct of transport activities. It includes understanding the entity’s transport activities and their hazards and risks. It includes making sure the entity has and uses the resources and processes to eliminate or minimise those risks, and to respond to information and incidents. And it includes checking that those resources and processes are actually being used.
The penalty structure changed on 1 August 2026. Section 26D(1a) now deals separately with the primary duty: an executive’s failure in relation to it carries the penalty for the corresponding Category 1, 2 or 3 offence by an individual. An offence under section 26D(1a) with the Category 1 penalty is now an indictable offence (section 5). Before that date one provision covered every safety duty, with the penalty for the provision by an individual.
What requests and contracts are prohibited?
Section 26E targets pressure on drivers. A person must not ask, direct or require a driver or a party in the chain, directly or indirectly, to do something the person knows, or ought reasonably to know, would cause the driver to break the rules (section 26E(1)). The rules covered are speed limits, driving a heavy vehicle while impaired by fatigue or unfit to drive, and the work and rest hours of a fatigue-regulated heavy vehicle. Asking a driver to break another law to avoid those things is caught too. A contract with that effect is also prohibited (section 26E(2)).
The maximum for each is $28,230. Before 1 August 2026 the section was confined to fatigue-regulated heavy vehicles and to fatigue, with a lower maximum. Whether a person ought reasonably to have known something is decided by reference to the person’s abilities, experience, expertise, knowledge, qualifications and training, and the circumstances of the offence (section 632).
What evidence can be used?
Codes of practice are admissible. A code of practice issued by the Regulator is admissible as evidence of whether a duty or obligation under the Law has been complied with, and the court may rely on it in deciding what is reasonably practicable (section 632A). Evidence of complying in a different way can still be led if it gives a standard of safety or protection equivalent to or higher than the code. Written notice of that evidence must be given to the prosecution at least 28 days before the hearing date (section 632A(4) and (5)).
Safety management system audits are admissible too. From 1 August 2026, an audit of an operator’s safety management system carried out by an approved auditor in accordance with the audit standard is admissible in proceedings for offences against sections 26D(1a), 26F, 26G and 26H (section 632B). An audit can help or hurt, and it is worth knowing which before the investigation goes further.
Investigations use compulsory powers. Authorised officers can require a responsible person to produce documents and give information about a heavy vehicle (sections 569 and 570), and the privilege against self-incrimination is no excuse (section 587). Oral answers to some of those requirements cannot be used against the individual in a criminal proceeding, but documents produced can be (section 588).
How are breaches enforced?
A primary duty breach cannot be dealt with by a formal warning (section 590(3)(c)). An enforceable undertaking can be accepted for any contravention except a Category 1 offence, at any time before the proceeding ends (section 590A). The Category offences have no infringement option.
On conviction the court has orders beyond a fine. It can make a commercial benefits penalty order of up to three times the gross commercial benefit (section 597). Where it considers the offender is, or is likely to become, a systematic or persistent offender, it can make a supervisory intervention order for up to 1 year (sections 599 and 600) or a prohibition order barring a stated role or responsibility in road transport for up to 1 year (sections 606 and 607). It can also order compensation for damage to road infrastructure (section 611).
Accreditation can be lost separately. The Regulator can amend, suspend or cancel a heavy vehicle accreditation on the grounds in section 473(1), which for accreditations approved from 1 August 2026 include that the Regulator considers it necessary to prevent or minimise a public risk. Review is by internal review within 28 days (section 641) and then appeal to the District Court (section 647), and a stay is not available for a decision made on a public safety ground (section 642).
What are the penalties?
The amounts below are the Regulator’s published maximums for 1 August 2026 to 30 June 2027, indexed under section 737, and this page is current to 24 October 2026.
| Offence | Individual | Corporation | Infringement |
|---|---|---|---|
| Category 1, section 26F | $436,850, 5 years imprisonment, or both | $4,230,550 | None |
| Category 2, section 26G | $212,090 | $2,120,880 | None |
| Category 3, section 26H | $70,580 | $705,820 | None |
| Executive due diligence for the primary duty, section 26D(1a) | The Category 1, 2 or 3 penalty for an individual, as appropriate | Not applicable | None |
| Prohibited requests and contracts, section 26E | $28,230 | Up to five times the individual maximum (section 596) | None |
These are maximums, not going rates, and the court keeps a broad sentencing discretion. Sections 26F to 26H state their own corporate maximums. Where a provision states only one maximum, a body corporate can be fined up to five times the maximum for an individual (section 596).
How similar matters tend to play out
Three illustrations of how the Law and the cases combine on ordinary facts. They are not predictions. Outcome depends on the facts, the record, the plea and the court.
Lower range. A small consignor’s booking terms set delivery windows that drivers say cannot be met legally. The Regulator raises the terms with the business. Reviewing and changing the terms, and documenting why, goes to what is reasonably practicable under section 5, and an enforceable undertaking under section 590A may resolve a Category 3 allegation without a prosecution.
Middle range. An operator’s drivers record repeated critical fatigue breaches over several weeks, and the operator did not cross-check diaries against telematics. The Regulator alleges a Category 2 offence under section 26G, with a corporate maximum of $2,120,880, and looks at whether the executives exercised due diligence under section 26D(3). The case turns on what systems existed, what was known and what was reasonably practicable.
Upper range. A driver is killed in a crash after a schedule that required unlawful hours. The Regulator charges the company with a Category 1 offence under section 26F and considers the executives under section 26D(1a). The charge is indictable, and once the Magistrates Court is satisfied the company may not be adequately punished summarily, committal under section 707(3) follows, even after a plea (Pentland). Commercial benefits, supervisory intervention and prohibition orders are available on conviction.
How do we defend a chain of responsibility matter?
Chain of responsibility law cases are decided by documents and systems. We map who did what in the transport task, what the business knew, and what it was reasonably practicable to do, before any interview or response.
| Stage | What happens | What we do |
|---|---|---|
| First contact | The Regulator issues information or document requirements, or asks for an interview. | Identify the party, the role and the risk, and advise on what must be produced and what is voluntary. |
| Investigation | Officers gather diaries, telematics, contracts, schedules and audits. | Gather the same material first, and test it against sections 26A to 26C and section 5. |
| Undertaking or charge | The Regulator may accept an undertaking or charge a category of offence. | Assess whether an undertaking under section 590A is available and sensible, or prepare for the charge. |
| Court pathway | Category 1 charges raise the section 707 question; other categories stay summary. | Advise on the forum, the evidence and the risk of committal. |
| Sentence and orders | The court sentences and may add orders under sections 597 to 611. | Put the systems, the remediation and the business consequences before the court. |
Where a business and an individual are both in the frame, their interests do not always align. We say so at the start, and we act for one of them. We cannot promise an outcome, and no lawyer can.
Every hour matters. Book a same-day free 30-minute consultation, or call (08) 7094 2021 now.
Chain of responsibility case law
The decisions below decide the points this page relies on. Pentland concerned a Category 1 prosecution; Sunrise concerned an accreditation cancellation; Wing was decided under the predecessor Road Traffic Act scheme.
| Case | Court | Principle | Pinpoint |
|---|---|---|---|
| Pentland Concrete Pty Ltd v National Heavy Vehicle Regulator [2026] SASC 79 | Supreme Court | Section 707 committal procedure applies to a Category 1 charge after a guilty plea | [9], [11], [12], [55], [61] to [63] |
| Sunrise Adelaide Transport Pty Ltd v National Heavy Vehicle Regulator [2026] SADC 52 | District Court | No stay of an accreditation cancellation made on a public safety ground | [13], [14], [17], [19], [51], [64], [67] |
| Department of Planning, Transport and Infrastructure v Wing [2014] SASC 115 | Supreme Court | Road safety overrides commercial imperatives (predecessor scheme) | [1], [18], [22] |
Case notes
Pentland Concrete Pty Ltd v National Heavy Vehicle Regulator [2026] SASC 79
One of the company’s concrete agitator trucks collided with a tree and the driver was killed, and the Regulator charged the company under section 26F ([12]). An indictable offence is an offence mentioned in section 26F ([9]), and South Australia has not modified sections 26F, 707 or 707A ([11]). Bochner J held that the adequate punishment bar in section 707(2)(b)(i) applies at any stage of the hearing, before and after conviction ([55]). “Any plea” in section 707(3)(c) includes a plea of guilty ([61]). The magistrate erred in treating section 707 as spent after the plea ([62]). The appeal must be allowed, with the orders to be settled after hearing the parties ([63]). Decided before 1 August 2026, when the definition of indictable offence was extended to some executive due diligence offences.
Sunrise Adelaide Transport Pty Ltd v National Heavy Vehicle Regulator [2026] SADC 52
The Regulator cancelled the company’s mass management, maintenance management and BFM accreditations under section 473(1), with effect from 1 May 2026 ([13], [14]). A public safety ground requires the Regulator to be satisfied that the decision is necessary to prevent a significant risk to public safety ([17]). Judge Mackenzie held that public safety need not be the only basis of the decision if it was a fundamental or determinative element of the reasoning ([51]). The cancellation was made on that ground ([64]), and the application for a stay was dismissed ([67]). Decided under section 473 as it stood before 1 August 2026; sections 640 and 642 were not changed on that date.
Department of Planning, Transport and Infrastructure v Wing [2014] SASC 115
A Crown appeal against fines for ten counts of contravening a direction to produce records under section 40W(4) of the Road Traffic Act, the predecessor scheme ([1]). Stanley J said heavy transport is attended by commercial pressures, and the purpose of the legislation is that road safety overrides them. Penalties must deter drivers tempted to withhold diaries or drive excessive hours ([18]). The appeal was allowed and the driver fined $7,500 for all ten counts ([22]).
Frequently asked questions
What is chain of responsibility law?
It is the set of duties in Chapter 1A of the Heavy Vehicle National Law that makes the safety of heavy vehicle transport the shared responsibility of every party in the chain (section 26A). Each party owes the primary duty in section 26C, and executives owe a due diligence duty under section 26D.
Who are the parties in the chain of responsibility?
Section 5 names ten: the employer of an employed driver, the prime contractor of a self-employed driver, the operator, the scheduler, and the consignor, consignee, packer, loading manager, loader and unloader of any goods in the vehicle. Responsibility follows the functions a person performs, not the job title (section 26A).
Does chain of responsibility apply if I never drive?
Yes, if the person fills one of the ten roles. The duty attaches to the function, such as scheduling, loading or consigning goods, whether or not the person ever drives a heavy vehicle.
What does reasonably practicable mean?
It means what is, or was at the time, reasonably able to be done, weighing the likelihood of the risk, the harm that could result, what the person knows or ought to know about the risk and how to reduce it, the availability and suitability of those ways, and their cost (section 5).
What is the penalty for a Category 1 offence?
For 1 August 2026 to 30 June 2027 the maximum is $436,850, 5 years imprisonment, or both for an individual, and $4,230,550 for a corporation. A Category 1 offence requires recklessness as to a risk of death or serious injury or illness, and it is indictable.
Can a company director be prosecuted personally?
Yes. An executive of a legal entity must exercise due diligence to make sure the entity complies with its safety duties, and can be convicted even if the entity is not prosecuted (section 26D). For the primary duty, the penalty is the Category 1, 2 or 3 penalty for an individual.
Can a chain of responsibility matter be resolved without court?
Sometimes. The Regulator or an authorised officer may accept an enforceable undertaking for any contravention except a Category 1 offence, before the proceeding ends (section 590A). A formal warning cannot be given for a breach of the primary duty (section 590(3)(c)).
Is a code of practice binding?
A code of practice issued by the Regulator is admissible as evidence of whether a duty has been complied with, and the court may rely on it in deciding what is reasonably practicable (section 632A). Compliance in a different way can still be shown if it gives an equivalent or higher standard of safety or protection, on written notice to the prosecution at least 28 days before the hearing date (section 632A(4) and (5)).
Do I have to answer the NHVR's questions?
The privilege against self-incrimination is no excuse for failing to comply with an authorised officer’s requirement to produce documents or give information (section 587). Oral answers to some requirements cannot be used against the individual in a criminal proceeding, but documents produced can be (section 588).
Do I need a lawyer for a chain of responsibility investigation?
Usually, yes, and early. The first response to the Regulator often fixes the record, and the business and its executives may need separate advice. A free 30-minute consultation will tell you where you stand.
South Australian courts we attend for heavy vehicle matters
We appear in the Adelaide Magistrates Court and in the regional courts on the freight routes, and in the District Court and Supreme Court for matters that go there.
Courts we attend
Book a same-day free 30-minute consultation or call (08) 7094 2021.