Speed Indicator Trailers for Perth's Outer Suburbs and Rural Roads
A speed indicator trailer is a fully self-contained, towable version of a speed indicator device radar, display, solar panel and battery all built onto a trailer chassis, so it can be hitched up and moved to a new location in the time it takes to tow it there. It's the option that makes sense when the road itself, not just the sign, needs to travel.
If you're weighing this up against a smaller portable unit, we can talk through which suits your rotation better before you buy.
When is a trailer the right call over a smaller portable sign?
A trailer earns its cost when you're covering longer distances between sites, dealing with wider or higher-speed roads where a bigger display and stronger radar are genuinely needed, or running a rotation across several suburbs where towing beats loading and unloading a lighter unit each time. For a single low-speed residential street, a lighter portable speed radar sign is usually the more cost-effective choice.
Where does this fit around Perth specifically?
Perth's outer growth corridors areas like Ellenbrook, Byford and Yanchep have all seen rapid new estate development in recent year routinely bring new roads, unfamiliar layouts and higher approach speeds before local traffic-calming infrastructure catches up. Rural and semi-rural roads on Perth's fringe, where speed limits are higher and sightlines are longer, are the other classic use case: a trailer unit gives drivers meaningful warning distance before a school, township or intersection.
What makes a trailer unit self-sufficient on site?
- A solar panel and battery sized to run for extended periods without a site visit well suited to Perth's roughly 3,200 annual sunshine hours
- A stable, road-legal trailer base that doesn't rely on penetrating the road surface
- Onboard data logging to build a case for permanent infrastructure at genuine hotspots
- Reflective and, on some units, illuminated marking so the trailer itself is visible when parked roadside
Does towing a sign trailer on WA roads have specific requirements?
Yes beyond standard trailer road rules, placement within a road reserve needs to follow AS 1742.3 and Main Roads WA's Code of Practice for Works on Roads, including stability requirements for windy conditions and correct signage of the trailer itself while it's stationary.
Solar lighting on the same unit?
For longer overnight deployments, some operators pair a trailer-mounted radar sign with a dedicated portable solar lighting unit so the site stays lit as well as monitored useful where a trailer sits on a rural road overnight with limited street lighting nearby.
Frequently asked questions
Do I need a special licence to tow a speed indicator trailer?
In most cases a standard car licence covers a light trailer of this type, but it's worth checking the specific trailer's weight and your licence class before towing, particularly for larger units.
How often does a speed indicator trailer need to be moved or serviced?
That depends on your rotation plan rather than the equipment itself many operators move a trailer every one to four weeks to cover a wider patch, while battery and radar checks are typically done on a routine maintenance schedule.
Covering a wider patch than a single street? Get in touch with Speed Radar Signs Australia to work out whether a trailer or a smaller portable unit fits your rotation.