How to Manage Drug and Alcohol Testing Across Shift-Based and 24-Hour Transport Operations

A testing program built around office hours cannot keep pace with operations that never stop. Shift changeovers at 2am, rotating rosters that cycle supervisors through different crews each week and depot gates processing 40 drivers in a 30-minute window all place demands on a drug and alcohol program that manual processes struggle to meet. The failure points are predictable: testing consistency drops when a different supervisor administers each shift, paper-based records produce gaps that surface only during audits, chain-of-custody documentation weakens when completed under time pressure at night and handheld devices create bottlenecks when every test requires an operator.

These are not hypothetical risks. They are the daily operational reality for fleet safety managers running testing programs across multiple shifts and depots. The question is not whether to test but whether the current program is producing records and outcomes that would withstand regulatory scrutiny.

Safety Duties and Testing Obligations for Fleet Operators

Fleet operators carry specific safety duties under both workplace health and safety law and the Heavy Vehicle National Law. The Model WHS Act (sections 19 and 20) requires persons conducting a business or undertaking to eliminate or minimise risks to health and safety so far as is reasonably practicable. The NHVR's Chain of Responsibility framework under HVNL section 26C extends this duty to every party influencing transport activities, from schedulers and loading managers to the operators themselves.

Drug and alcohol testing is not universally mandated by legislation, but it is the most direct and defensible control measure available to meet the "reasonably practicable" standard. Breathalysers used in Australian workplaces must be certified to AS 3547:2019. Oral fluid drug testing must comply with AS/NZS 4760:2019. Operators should note that Victoria diverges from the Model WHS Act and operates under the Occupational Health and Safety Act 2004, which carries different structural and terminological requirements. In Western Australia, the WHS Act 2020 and WHS (Mines) Regulations 2022 apply; the legacy Mines Safety and Inspection Act 1994 was superseded from 31 March 2022 and is no longer current. Fleet managers building a defensible drug and alcohol policy for transport operations should verify their obligations under the relevant jurisdiction.

Setting Up Gate-Entry and Depot-Based Testing for High-Volume Shifts

Wall-mounted breathalyser systems positioned at depot entry points or driver sign-on areas allow high-volume pre-start testing without requiring an operator to administer every individual test. The Soberlive FRX wall-mounted breathalyser uses facial recognition to verify identity before, during and after each breath test, records results automatically and syncs data to the Andalink cloud platform in real time. With a response time of five seconds and a recovery time of under 30 seconds between tests, the system supports the throughput demands of a busy shift changeover.

Integration with door access control systems adds a practical enforcement layer. A driver who records a breath alcohol concentration above the set threshold is denied entry to the premises, removing the ambiguity of relying on a supervisor to act on a handheld reading at 4am. Installation at indoor, covered locations with adequate lighting and stable power supply is recommended for consistent operation across a 24-hour cycle. Highways Traffic improved testing compliance across day and night shifts with automated breathalyser systems after experiencing the limitations of handheld devices outside standard hours.

Maintaining Consistent Testing Standards Across Every Shift

Supervisor variability is the most common source of inconsistency in shift-based testing programs. When the night-shift supervisor applies a different standard to the day-shift supervisor, the program loses credibility with workers and defensibility with regulators. Standardised testing protocols, documented in the drug and alcohol policy and supported by regular supervisor training, reduce this variability. Automated systems reduce it further by removing operator discretion from the routine testing process itself.

The Andalink platform gives safety managers real-time visibility of testing activity across all shifts and depots from a single dashboard. If the 2am shift at a regional depot has not recorded any tests by 3am, that gap is visible immediately rather than surfacing in a weekly paper audit. Organisations that understand why testing programs built on equipment alone often underperform recognise that aligning policy, training, culture and technology is the path to consistent outcomes.

Meeting Chain-of-Custody Standards When Testing Happens After Hours

Chain-of-custody requirements under AS/NZS 4760:2019 and AS 3547:2019 apply regardless of when testing occurs. Specimen identification, collector identification, time and date recording, tamper-evident sealing for specimens sent for confirmatory analysis and continuity-of-possession documentation must all be completed to the same standard at 3am as at 10am.

After-hours testing frequently produces weaker documentation because of time pressure, fewer witnesses and fatigue. Automated systems address this directly. The Soberlive FRX generates time-stamped, facial-recognition-verified records that sync automatically to Andalink, creating a chain of evidence that does not depend on a supervisor completing paperwork under pressure. Where oral fluid drug testing forms part of the program, the DrugSense DSO8 Plus V3 and OraScan Saliva Drug Test Cassette V5 provide specimen collection options that comply with AS/NZS 4760:2019.

How to Reduce Testing Variability: Manual Handheld vs Automated Wall-Mounted

The Prodigy S portable breathalyser remains the appropriate choice for mobile, off-site or field testing where wall-mounted installation is not feasible. Both devices are certified to AS 3547:2019.

Turning Shift-by-Shift Records into a Defensible Audit Trail

Testing records that sit in a paper tray for three days before consolidation are not an audit trail. Andalink captures every test result automatically, links it to a verified identity, time-stamps it and stores it in a centralised, searchable cloud database. Safety managers can generate CSV exports for audit preparation, set exception alerts for threshold breaches and analyse testing trends over time. Andatech's ISO 27001:2022 certification provides assurance that data is managed under internationally recognised information security standards. For organisations managing the full financial cost of an impairment-related workplace incident, a complete and accessible testing record is both a compliance asset and a risk mitigation tool.

Comparing the Total Cost of Manual and Automated Testing Programs

The total cost of a testing program extends well beyond equipment. Administrative costs (operator time per test, training, record consolidation, audit preparation) and liability exposure costs (legal fees from weak chain of custody, regulatory penalties, workers' compensation premium increases) frequently exceed the direct cost of testing devices and consumables. Fleet safety managers presenting a business case for automated infrastructure should calculate the per-test administrative cost of their current manual program and compare it against the per-test cost of an automated system amortised over its operational life.

The Finlease financing partnership allows organisations to convert the capital expenditure of Soberlive FRX wall-mounted systems into predictable monthly operating expenditure, removing the upfront budget barrier that often delays implementation.

Talk to Andatech about your fleet testing program

Andatech works with transport and logistics operators across Australia to design testing programs that function reliably across every shift. Contact the team to discuss configuring the Soberlive FRX wall-mounted breathalyser, OraScan 3000 Analyser and Andalink data management platform for your depot operations.