Regulatory Road Sign - R4-1 Speed Limit 10, 450mm (W) x 600mm (H), Class 1 (400), Aluminum

Frequently Asked Questions

What is the difference between Class 1 and Class 2 Signs?

Class 1 (Class 400) Reflective Aluminium is the higher grade of reflectivity, and can be differentiated by the honeycomb pattern on its face. Because of their high reflectivity, they are most commonly used on public roads. Class 2 (Class 100) Reflective Films are more suited for non-critical, off-road signage that require high visibility and reflectivity - such as car parks or around schools.

Why are some signs shaped differently?

Road and traffic signs come in a variety of different shapes and colours. These shapes and colours are standardised for NSW roads, and are able to warn road users of potential hazards ahead. In emergency situations, it is easier for the human brain to interpret colours and shapes instead of words, especially when making split-second decisions.

Why are road signs so reflective?

Road signs are designed to reflect light from a variety of different angles. This makes them extremely useful in real-world applications where vehicles may be approaching at different speeds and from different directions. Regardless of where a vehicle may be coming from, the unique design of road signs makes them visible from most angles.

How often do I need to replace my signs?

How often you need to replace your signs depends on the material and the environment they have been placed in. Aluminium signs (with proper maintenance) have a life expectancy of 5-7 years. However, if placed indoors, it could exceed this timeline. For signs made of plastic (such as polypropylene, self adhesive vinyl and corflute), life expectancy is closer to 3-5 years.

How do I know what the right size is for my sign?

The ‘right size’ for your sign will depend on what distance it needs to be visible from. If your sign uses a combination of words and pictograms, we recommend measuring the furthest distance these symbols will need to be visible from. According to AS 1319-1994, a compliant sign must be designed with these considerations: pictograms are at least 15mm per metre of viewing distance, while capital and lowercase letters should be 5mm and 4mm per metre of viewing distance, respectively.

For maximum visibility and clarity, we recommend that for a sign to be visible at up to 12m, its dimensions must be 300mm x 250mm. This extends up to a viewing distance of 27m, where the dimensions of the same sign would have to be widened to 600mm x 450mm*. *Understanding AS 1319-1994, p.12 (Seton Source Book 2021)

What do I need to consider when installing my sign?

To make sure that your sign is compliant with Australian Standard AS 1319-1994, it is important that you take into account the following when installing your sign - Consider the signs overall positioning (is it near trees or other obstacles?), measure the viewing distance (to ensure there is enough space to warn pedestrians and traffic of hazardous conditions) and the amount of natural light near the sign.

How deep do sign posts need to be?

The depth of the footings for your sign post will depend on the size of the sign itself and the conditions of the ground it is being installed in. We recommend using the NSW Road and Transport authority’s installation guide as a tool to help you make the right decision when installing your sign.

Which materials are best suited for outdoor signs?

When installing safety signage outdoors, it is important to consider the conditions of the natural and built environment. For the Australian climate, aluminium and metal are two stand-out options. Both are corrosion resistant and extremely durable.

Can I use this sign outdoors?

This sign is made from durable Class 1 (class 400) reflective aluminium. It is strength-tested and corrosion resistant, making it a very suitable option for outdoor applications. If properly maintained and cared for, this aluminium sign can be a long term option for schools and local businesses looking for a lightweight traffic solution.

Can this sign be used on the road?

To be authorised for use on NSW roads, road signs must meet the mandatory requirements set by the NSW state government. This sign does not meet these requirements, which means that it can not be used on public roads. Seton recommends using this sign on closed roads, school facilities and car parks

What is a regulatory road sign?

A regulatory road sign is used to inform users of the traffic rules and regulations on closed roads, car parks and public roads. They are a useful tool for reinforcing safe behaviour on our roads, and for protecting the wider community.