Platinum Signs
Keep Left Unless Overtaking Sign
PSS-TRF-309 · Product data sheet
Data sheet
26 August 2026
https://www.platinumsigns.com.au
Description
This mandatory lane discipline sign reinforces safe overtaking behaviour on Australian roads, reducing head-on collisions and traffic incidents. Manufactured in lightweight aluminium, it's available in 450×600 mm or 600×800 mm to suit different road classifications. Reflective Class 1 sheeting is optional for enhanced visibility. Platinum Signs provides bulk pricing for road authorities and contractors, with no minimum orders 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-309
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/keep-left-unless-overtaking.
Frequently asked
Is this sign legally required on Australian roads?
It's not universally mandated, but road authorities widely install it on multi-lane roads to reinforce safe overtaking practice and reduce collision risk.
What's the difference between the two sizes?
450×600 mm suits local roads and urban arterials; 600×800 mm is better for highways where drivers need to read the sign from higher speeds.
How often does reflective sheeting need replacing?
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 sizes in one order?
Yes, you can order both sizes together at no extra charge. This is useful for staggering signs across longer road sections.
What's the typical cost for a council ordering 20+ signs?
Bulk orders of 20+ signs receive volume discounts. Contact our sales team with your specification for a competitive quote.