Australia Industries

Transport & Logistics

The transport and logistics sector has never had a specific diesel particulate matter limit in Australia. From 1 December 2026, the incoming WEL of 0.01 mg/m³ (respirable elemental carbon) applies to every enclosed or semi-enclosed diesel operation. Research shows standard diesel equipment in enclosed spaces routinely exceeds this limit by two to three times. Bus depots, truck terminals, warehouses using diesel forklifts, loading docks, rail maintenance depots, and underground car parks will all require baseline monitoring and engineering controls.

4 Key Hazards Monitored

Key Hazards

Primary exposure hazards requiring monitoring in this industry sector.

Diesel Particulate Matter (DPM)

voc

First-ever national limit of 0.01 mg/m³ (respirable elemental carbon) from 1 December 2026. No previous WES existed for DPM outside the mining sector. Enclosed idling in bus depots and truck terminals generates the highest exposures. NIOSH 5040 method (thermal optical analysis on quartz filter).

Noise

noise

Vehicle maintenance workshops, loading dock operations, heavy vehicle movements, and machinery in distribution centres. Personal dosimetry across maintenance, driving, and warehouse SEGs.

Solvent Vapours (vehicle workshops)

voc

Parts cleaning, degreasing, paint touch-up in fleet maintenance workshops. Toluene, xylene, MEK, acetone. TWA and STEL sampling required.

Welding Fume (workshop repairs)

weld

Fleet maintenance welding — body repairs, structural modifications, exhaust work. Welding fume WEL drops from 5 to 1 mg/m³ from December 2026.

Common Analytes

Substances typically included in occupational hygiene sampling proposals for this industry.

Analyte	CAS	Relevance
Diesel Particulate Matter (elemental carbon)	—	NEW WEL 0.01 mg/m³ from 1 December 2026. No previous limit existed outside mining. NIOSH 5040 method.
Noise (LAeq,8h)	—	WES 85 dB(A). Workshop and loading dock operations.
Carbon Monoxide	630-08-0	Vehicle exhaust in enclosed spaces. WES 30 ppm TWA.

Typical Worker Groups

Common similar exposure groups (SEGs) assessed in this industry.

Bus drivers (depot idling)Depot mechanicsWarehouse forklift operatorsLoading dock workersFleet maintenance weldersDistribution centre pickers (near diesel equipment)

Regulatory Context

The WEL for diesel particulate matter (0.01 mg/m³ respirable elemental carbon) is the first specific national limit for this substance. Previously, only the mining sector had state-specific limits (WA: 0.1 mg/m³ submicron elemental carbon). The new WEL applies to ALL workplaces from 1 December 2026 with no grace period.

Related Industries

Other high-hazard sectors in Australia where we provide occupational hygiene monitoring.

Ready to discuss your monitoring requirements?

Our qualified occupational hygienists will review your situation and provide a tailored sampling proposal within 48 hours.

Submit a transport and logistics hygiene inquiry