Platinum Signs
20km Speed In Roundel Sign
PSS-TRF-339 · Product data sheet
Data sheet
5 August 2026
https://www.platinumsigns.com.au
Description
The 20 km/h roundel sign enforces reduced speed limits in residential zones, school areas, and parking facilities. Compliant with AS 1319, this sign's circular design ensures instant recognition. Available in aluminium or polypropylene, with three size options (300×225 mm, 450×600 mm, 600×450 mm) to suit any installation. Reflective Class 1 or Class 2 finishes enhance visibility in dim lighting. Platinum Signs delivers to all Australian postcodes with volume discounts for trade buyers and fleet operators.
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
- Speed Limit Signs
- Sign selection
- Confirm against site requirements
- Artwork
- Off-the-shelf design supplied as shown
- Product code
- PSS-TRF-339
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. |
| Polypropylene (1.6mm) | Rigid plastic sheet suited to indoor and sheltered or general outdoor applications, subject to the print finish and site exposure. Indicative service life: Medium-term use; site conditions apply. Typical use: Warehouses, factories, permanent indoor/outdoor. |
Available sizes
- • 300 x 225mm
- • 450 x 600mm (Large)
- • 600 x 450mm
Volume pricing — Aluminium (1.6mm) · 300x225 (inc. GST)
| Quantity | Unit price | Saving |
|---|---|---|
| 1-4 | $30.00 | — |
| 5-9 | $27.60 | -8% |
| 10-24 | $25.50 | -15% |
| 25-49 | $22.80 | -24% |
| 50-99 | $20.40 | -32% |
| 100+ | $18.00 | -40% |
Prices shown for the listed material/size combination. Full configuration pricing is available at https://www.platinumsigns.com.au/safety-signs/speed-limit/20km-speed-in-roundel-1.
Frequently asked
Why is the roundel design preferred for speed limits?
The circular format is instantly recognisable and meets international traffic sign conventions, making it effective even when viewed at an angle or from a distance.
What's the typical installation height for this sign?
For optimal visibility, mount at eye level (1.5–2 m high) on posts or walls, ensuring the sign face is perpendicular to the direction of travel.
Is Class 1 reflective material sufficient for daytime use?
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 mix materials in a bulk order?
Automatic volume pricing is 5–9 signs: 8% off, 10–24 signs: 15% off, 25–49 signs: 24% off, 50–99 signs: 32% off, 100+ signs: 40% off. The configurator is the source of truth and updates the unit price as quantity changes.
How long does delivery take?
Standard delivery is 5–7 business days Australia-wide. Express options are available at checkout for urgent projects.