T4 Road Signs | Speed & Caution Signs

T4 Series

The T4 (special hazard) road signs are an essential part of traffic signage, specifically designed to alert drivers to various hazards or special conditions on the road.

Warning: Smoke Hazard Sign

Warning: Smoke Hazard Sign

Regular price From $86.03 AUD

Regular price ~~$0.00 AUD~~ Sale price From $86.03 AUD
Unit price per
Reduce Speed Sign - Aluminium

Reduce Speed Sign - Aluminium

Regular price $154.48 AUD

Regular price ~~$0.00 AUD~~ Sale price $154.48 AUD
Unit price per
Warning: Power Line Works In Progress Sign

Warning: Power Line Works In Progress Sign

Regular price $198.97 AUD

Regular price ~~$0.00 AUD~~ Sale price $198.97 AUD
Unit price per

High-quality T4 road signs approved for use on Australian roads

The T4 (special hazard) road signs are an essential part of traffic signage, specifically designed to alert drivers to various hazards or special conditions on the road. These temporary signs are crucial for ensuring road safety and efficient traffic flow, especially in areas where unexpected conditions or potential dangers are present.

T4 road signs are uniquely designed to capture the attention of drivers as fast as possible. They feature bold colours and large fonts that are easily recognisable even from a distance. The design is such that it conveys the message quickly and clearly to drivers, reducing reaction time and enhancing safety.

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HIVIS is a 100% Australian manufacturer of T4 road signs, all of which are approved for use by Transport NSW. Shop the range online for fast, affordable shipping — our signs are ready to ship within 24 hours.

Our collection of T4 road signs

We offer a range of T4 road signs with bright, recognisable colours and Class 400 reflectivity:

Reduce Speed Signs: These signs are designed to alert drivers to lower their speed, often anticipating a specific hazard or a change in road conditions ahead. They are available in two sizes: 900mm x 600mm and 1200mm x 900mm.

Warning: Smoke Hazard Signs: Warning signs for smoke hazards inform drivers of potential visibility issues due to smoke. This could be due to nearby fires, industrial activities, or other sources of smoke. They serve to caution drivers to be prepared for reduced visibility and to drive with increased care.

Warning: Power Line Works In Progress Signs: These signs notify drivers of ongoing electrical work involving power lines near the road. It alerts drivers to the presence of maintenance crews, potential obstructions, or the need for extra caution when navigating through the area, especially where equipment and workers are close to the roadway.

Contact us for more information about T4 road signs or to organise custom signage that matches the requirements of your location and/or worksite.

FAQs about T4 road signs

Where are Reduce Speed signs typically placed?

They are often placed before sharp curves, school zones, construction sites, or any area where a lower speed is necessary for safety. Drivers can be fined for not complying with these signs.

Are Smoke Hazard signs permanent or temporary?

They are usually temporary and installed in response to specific events like wildfires or controlled burns that produce significant smoke. Drivers should reduce speed, turn on headlights, and be prepared for suddenly reduced visibility.

Are these Power Line Works signs used for overhead and underground power line works?

Yes, these signs can be used for both types of work, as both can impact road safety and traffic flow. Drivers should slow down, be vigilant, and follow any additional directions or detours related to the work zone.

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T4 Series

Warning: Smoke Hazard Sign