Platinum Signs
Trucks & Buses Must Use Low Gear Sign
PSS-TRF-304 · Product data sheet
Data sheet
26 August 2026
https://www.platinumsigns.com.au
Description
Trucks & Buses Must Use Low Gear signs communicate mandatory drivetrain requirements on steep grades, protecting vehicle brakes and preventing runaway incidents. Constructed from rigid aluminium with Class 1 reflective surface, these signs comply with AS 1319 and are offered in 450×600 mm and 600×800 mm. Reflectivity ensures drivers spot the instruction in all weather. Platinum Signs supplies transport operators, road authorities, and contractors with trade rates, bulk volume discounts, and Australia-wide delivery.
Final sign type, wording, size, placement and material depend on the site risk, project specification and applicable jurisdiction. Confirm the requirement with the relevant WHS adviser or regulator.
- Category
- Traffic & Road Signs
- Sign selection
- Confirm against site requirements
- Artwork
- Off-the-shelf design supplied as shown
- Product code
- PSS-TRF-304
Available materials
| Material | Specification |
|---|---|
| Aluminium (1.6mm) | Rigid aluminium sheet suited to long-term signage where corrosion resistance and dimensional stability matter. Indicative service life: Long-term substrate; print and site conditions apply. Typical use: Permanent outdoor installations and high-durability sites. |
Available sizes
- • 450 x 600mm (Large)
- • 600 x 800mm
Volume pricing — Aluminium (1.6mm) · 450 x 600mm (Large) (inc. GST)
| Quantity | Unit price | Saving |
|---|---|---|
| 1-4 | $95.00 | — |
| 5-9 | $87.40 | -8% |
| 10-24 | $80.75 | -15% |
| 25-49 | $72.20 | -24% |
| 50-99 | $64.60 | -32% |
| 100+ | $57.00 | -40% |
Prices shown for the listed material/size combination. Full configuration pricing is available at https://www.platinumsigns.com.au/safety-signs/traffic/trucks-buses-must-use-low-gear.
Frequently asked
Is this sign required by law on steep roads?
While not universally mandatory, AS 1319 and state transport authorities recommend low-gear warning signs on sustained downhill sections exceeding 6% gradient to prevent brake failure.
What size is suitable for a steep mountain pass?
Available sizes are 450 x 600mm (Large), 600 x 800mm. Viewing-distance notes are a practical selection aid, not a substitute for checking the approach distance, lighting, mounting position, wording and site risk assessment.
How durable is the reflective coating?
Reflective grades provide different visibility performance. Choose the grade required by the project specification and site conditions, and confirm any road, traffic or high-risk requirement with the relevant authority before ordering.
Can I order signs for multiple locations?
Yes, we provide bulk discounts for operators installing signs across multiple sites. Contact sales with your location list for a volume quote.
What mounting options do you recommend?
Signs are supplied flat; mounting hardware and methods should comply with AS 1319 and local road authority guidelines for your installation height and angle.