Why alcohol risk is a fleet duty-of-care issue in NSW

If a worker drives for work in New South Wales, the business carries a duty for that driving, and alcohol is one of the more manageable risks inside it. SafeWork NSW says a person conducting a business or undertaking (PCBU) must take proactive steps to manage the risks of alcohol and other drugs, and that it is reasonably foreseeable workers may be affected by them. Where a risk cannot be eliminated, it is to be minimised so far as is reasonably practicable using effective control measures.

For a fleet or safety manager, that duty shapes procurement, onboarding and incident response as well as compliance. A written policy, driver communication, workplace testing and an in-vehicle device all sit inside the same duty, and none of them works well alone.

What NSW law requires, and what it does not

Two separate rules are often run together, so it helps to state them apart.

The first is the blood alcohol concentration (BAC) limit that attaches to the licence and the vehicle. Transport for NSW says NSW has three limits for drivers: zero, under 0.02 and under 0.05. Under 0.02 applies to drivers of vehicles over 13.9 tonnes gross vehicle mass, drivers of vehicles carrying dangerous goods and drivers of public vehicles such as taxis or buses. Zero applies to learner, provisional 1 and provisional 2 drivers, and under 0.05 applies to most other drivers.

The second is the NSW Alcohol Interlock Program. The NSW Government describes it as a court-ordered requirement for some drink driving offenders, who are restricted to driving vehicles fitted with an interlock device for a period after they return to driving. It is an individual order that follows specific offences, so it is not a rule applied to a fleet or an industry.

A fleet policy should keep the two apart. This guide makes no statement about any individual driver’s licence position, and a manager who needs that answer for a particular person should direct the driver to Transport for NSW or to legal advice.

Breath testing and interlocks are different controls

A workplace breath test and an interlock are often discussed as if one replaces the other. They do different jobs, and the difference matters when you write a policy.

A workplace breath test is a screening programme that the employer runs under its own policy. It happens at a point in time, such as at the start of a shift, at random or after an incident, and the result is acted on by a person following the policy. SafeWork NSW lists random, pre-employment and post-incident testing as examples of testing programmes, and notes that legal advice may be needed when testing is considered as a control measure.

An interlock is a device fitted to the vehicle that asks the driver for a breath sample before the vehicle will start. It applies every time the vehicle is used and does not depend on someone being present to test. Each one sits beside training and supervision, not in place of them.

What alcohol risk looks like by sector

The limit that applies follows the vehicle, the task and the licence held, not the industry label on the business. The notes below set out what the sources we reviewed support for each sector, and no more.

Transport and logistics

A truck over 13.9 tonnes gross vehicle mass carries the under 0.02 limit, and so does any vehicle carrying dangerous goods. A logistics business with a mixed fleet will have drivers under different limits on the same day, so one clear standard for everyone, such as no alcohol before driving, is simpler to communicate.

Mining and resources

NSW mine sites carry their own obligations under the Work Health and Safety (Mines and Petroleum Sites) Regulation 2022. Section 45, headed fatigue, alcohol and drugs, says that in complying with section 14, the operator of a mine or petroleum site must manage the risks to health and safety associated with worker fatigue, the consumption of alcohol by workers and the use of drugs by workers. It is a duty to manage the risk, and the text we read prescribes no particular test. The NSW Resources Regulator states that mine operators and PCBUs have a responsibility to prevent workers who may be under the influence of drugs and alcohol from engaging in activities that could have lethal consequences. A contractor working on a mine site should ask for the site’s rules before mobilising.

Government fleets

Local and state government fleets run a wide mix of vehicles, from sedans to heavy trucks and buses. The BAC limit follows the licence and the vehicle in the same way as for a private operator, so a council truck over 13.9 tonnes gross vehicle mass is under 0.02.

Tourism and passenger transport

Transport for NSW gives taxis and buses as examples of public vehicles under the 0.02 limit. A tour or charter operator should confirm with Transport for NSW whether its vehicles fall within that category before setting its policy.

Commercial and trades

Utes, vans and light trucks usually fall under the 0.05 limit that applies to most drivers, unless the vehicle is over 13.9 tonnes or carrying dangerous goods. Learner and provisional drivers, which can include apprentices on P plates, are under the zero limit, so a note in the induction pack is worth including.

Building an alcohol risk policy for your fleet

A workable fleet policy is built in sequence, and a device is only one part of it.

Start with a risk assessment that maps which roles involve driving, which vehicles sit under the 0.02 or zero limits and where an incident would be most severe. SafeWork NSW advises consulting workers when you identify and control these risks, and reviewing whether the controls work.

Then put the policy in writing. SafeWork NSW names a testing programme, worker consultation and a review of whether the controls work. Cover those, and set out acceptable behaviour, roles and responsibilities, how breaches are handled and the support available to workers, which are the employer’s own calls. A policy that is explained at induction and revisited later is easier to apply than a one-off document.

Finally, decide where a control measure fits. An interlock catches an individual attempt to drive after drinking, while policy and communication reduce how often that situation arises.

Where interlock devices fit for commercial fleets

Some fleets decide an in-vehicle device is the right control for higher-risk roles. The risk assessment above shows where: the roles that drive vehicles under the 0.02 or zero limits, and the runs where an incident would be most severe. A device covers every start, including starts away from any testing point, where a workplace breath test covers a point in time.

Affordable Interlock Systems says on its commercial interlock systems page that its systems are used so that drivers cannot operate a vehicle before successfully completing a breath alcohol test, across passenger and public transport, goods transport and heavy equipment. The page lists telematics integration among its standard features, designed to integrate with existing telematics systems so fleet managers can monitor driver sobriety, and says the devices are available in all states and territories, including New South Wales. A commercial installation is a decision the business makes for its own fleet, not a condition of the NSW program, which applies to individual drivers by court order.

That page is a next step once the business has decided a device belongs in its policy. It does not replace the risk assessment that should come first. For the individual-driver side, see the guide to NSW alcohol interlock laws and a legal guide to alcohol interlock devices in NSW.

FAQ

What is the alcohol limit for truck drivers in NSW?

Drivers of vehicles over 13.9 tonnes gross vehicle mass, drivers of vehicles carrying dangerous goods and drivers of public vehicles such as taxis or buses must stay under a BAC of 0.02. Most other drivers are under 0.05, and learner and provisional drivers must be at zero.

Does a workplace breath test do the same job as an interlock?

No. A workplace breath test is a screening programme run under the employer’s policy, and it checks a driver at a point in time. An interlock is a device in the vehicle that asks for a breath sample before the vehicle will start.

Does a mining company have extra alcohol obligations in NSW?

Yes. NSW mine sites carry obligations under the NSW work health and safety mines regulation, and the NSW Resources Regulator says mine operators and PCBUs must prevent workers who may be under the influence of alcohol from risky activities. Check the current regulation and your site rules for the detail.

Managing alcohol risk in your fleet, from policy to device

Managing alcohol risk in a NSW fleet starts with the duty of care, moves through a written policy and testing approach, and only then reaches the question of a device. Treating a device as the whole answer leaves most of the risk unmanaged.

If your business is working out where interlock devices fit inside a fleet alcohol policy, Affordable Interlock Systems can help you work through a fleet alcohol risk assessment. Feel free to call us on 1-800-252-656 and see how we can assist you.