D Series Hazard Markers

D Series Hazard Markers – AS1743 Compliant Road Safety Signs
D Series Hazard Markers are an essential category of road safety signage used throughout Australia to clearly identify hazards, obstacles, and roadside infrastructure that may pose a risk to motorists.
Designed in accordance with Australian Standard AS1743 – Road Signs Specifications, D Series hazard markers provide high-visibility guidance to drivers, helping reduce collisions with fixed roadside objects and improving overall road safety.
These markers are commonly installed on:

Traffic islands

Bridge abutments

Guardrails and barriers

Roadside obstacles

Culverts and drainage structures

Median islands

Kerb extensions

Roundabouts

Narrow bridges and road infrastructure

When installed correctly, hazard markers alert drivers to physical obstructions and guide them safely through potentially dangerous road environments.
At National Safety Signs, our D Series hazard markers are manufactured using premium reflective materials and durable substrates to withstand Australia’s harsh outdoor conditions while maintaining compliance with road authority specifications.

What Are D Series Hazard Markers?
The D Series classification refers to a group of directional hazard markers used to identify obstacles within or adjacent to the roadway.
These markers feature bold diagonal stripes or directional patterns, typically in black and yellow or red and white reflective materials, which clearly indicate:

The presence of an obstacle

The direction traffic should pass

The edge of road infrastructure

Their reflective properties ensure maximum visibility during night driving, low-light conditions, and adverse weather, significantly improving driver awareness and reaction time.

AS1743 Compliance for Hazard Markers
Australian road signage must comply with AS1743 – Road Signs Specifications, which defines the design, colours, reflectivity, and dimensions of regulatory and hazard signage used across the road network.
Our D Series hazard markers are manufactured to meet AS1743 requirements, ensuring they are suitable for installation in:

Road construction zones

Public roads and highways

Local council infrastructure

Car parks and commercial developments

Traffic management plans

Using compliant signage is essential for traffic management companies, civil contractors, councils, and infrastructure operators to maintain safe and legally compliant road environments.

Common Applications for Hazard Marker Signs
D Series hazard markers are widely used across civil construction, traffic management, and public infrastructure projects.
Typical applications include:

Road Infrastructure
Highlighting bridge piers, culverts, and roadside structures that sit close to traffic lanes.

Traffic Islands and Medians
Directing vehicles safely around central islands, kerb extensions, and pedestrian refuges.

Bridge and Narrow Road Warnings
Marking structural edges where vehicles must pass carefully.

Car Parks and Commercial Sites
Protecting structures such as columns, bollards, and barriers from vehicle impact.

Traffic Control Projects
Used within Traffic Management Plans (TMPs) to guide vehicles safely around obstacles.
Correct placement of hazard markers helps reduce vehicle strikes, prevent accidents, and improve traffic flow in complex road environments.

Built for Australian Conditions
National Safety Signs manufactures high-quality hazard marker signage designed for durability and visibility in Australian conditions.
Key features include:

AS1743 compliant designs

High-intensity reflective sheeting

UV-resistant inks and materials

Weather-resistant aluminium substrates

Long service life in harsh outdoor environments

Suitable for road authorities and traffic management use

Our signage is built to maintain reflectivity, visibility, and structural integrity even in high-exposure roadside environments.

Trusted by Civil Contractors and Traffic Professionals
National Safety Signs supplies compliant road signage to businesses across Australia, including:

Traffic management companies

Civil construction contractors

Local councils

Infrastructure operators

Mining and industrial sites

Facilities and property managers

With fast turnaround times, Australian-made products, and reliable nationwide delivery, we help organisations maintain safe, compliant road environments without delays.

Order AS1743 Compliant Hazard Markers Online
If your project requires reliable and compliant road hazard markers, National Safety Signs offers a comprehensive range of D Series signage ready for installation.
Our hazard markers are designed for maximum visibility, durability, and compliance, ensuring drivers receive clear guidance around roadside hazards.
Browse our full range of D Series Hazard Markers below or contact our team for assistance selecting the correct signage for your traffic management or infrastructure project.