Tactile Indicators: Where Are They Required?

Where Are Tactile Indicators Required in Australia?

Tactile indicators are required at specific hazards and decision points, including stairs, ramps, kerb ramps, crossings, and platform edges, as defined by AS 1428.4.1. They’re essential for safety and accessibility, helping everyone—especially those with vision impairment—navigate public and commercial spaces safely.

If you’re responsible for a public building, transport hub, or even a shopping centre, you’ll need to get these placements right. The rules aren’t just good practice—they’re law under the Disability Discrimination Act (DDA) and referenced in the National Construction Code. Miss the mark, and you could face complaints, delays, or expensive rework. We’ve seen it happen.

Here are the areas where tactile ground surface indicators (TGSIs) are commonly required, as per AS 1428.4.1:

• At the top and bottom of stairs
• At ramps (top and bottom)
• Kerb ramps and pram crossings
• Pedestrian crossings
• Public transport platform edges
• Escalators and moving walks
• Key decision points in continuous accessible paths

For a deep dive into the types and uses of these indicators, check our tactile indicator guide.

What Are Tactile Ground Surface Indicators (TGSIs)?

Tactile ground surface indicators (TGSIs) are textured ground surfaces that provide a cue underfoot or with a cane. TGSIs come in two main types: warning (hazard) and directional, each serving a specific role in accessible design.

Warning TGSIs, often called hazard indicators, use a pattern of raised dots to alert people to a nearby danger—like the edge of a platform or top of stairs. Directional TGSIs, which use raised bars, guide users along a safe path or towards key features such as crossings or building entrances.

TGSIs are a must under the Australian Standard AS 1428.4.1. They’re crucial for people who are blind or vision-impaired, but they also help anyone distracted or unfamiliar with an area stay safe. The difference between dots and bars isn’t just aesthetic—it’s how users distinguish between a warning and a direction.

Type	Purpose	Pattern
Warning	Alert to hazards	Raised dots
Directional	Guide along path	Raised bars

Why Are Tactile Indicators Legally Required?

Tactile indicators are legally required in Australia to ensure equal access and safety for people with visual impairments. This is mandated by the Disability Discrimination Act (DDA) and referenced in the National Construction Code (NCC) and AS 1428.4.1.

The Australian Human Rights Commission enforces these rules to remove barriers in public and commercial spaces. If you don’t comply, you risk DDA complaints, forced upgrades, and potentially fines. Safe Work Australia also recognises the role of TGSIs in workplace safety for both employees and the public.

Don’t think of TGSIs as just a box-tick—they’re about preventing accidents and making spaces usable for everyone. If you want a practical example, just look at any major train station platform or pedestrian crossing in a CBD. Missed or incorrectly installed tactile indicators are a common reason for failed inspections and project delays.

Which Hazards Trigger the Need for Tactile Indicators?

Tactile indicators are required wherever there’s a hazard that can’t be detected easily by someone with low or no vision. AS 1428.4.1 specifically covers stairs, ramps, kerb ramps, crossings, and platform edges.

Common hazards that require TGSIs include:

• Changes in level (steps, stairs, ramps)
• Edges of transport platforms
• Pedestrian crossings (start and end)
• Escalators and moving walks
• Slopes or kerb ramps leading onto roads

Think about your site: if there’s a spot someone could trip, fall, or step into traffic without warning, that’s where you’ll need tactile indicators. Not all ramps or crossings are the same, so it’s worth checking the exact layout against AS 1428.4.1—or get us to walk you through it.

Where Are TGSIs Required on Stairs and Ramps?

On stairs and ramps, tactile indicators are required at both the top and bottom landings where people transition between levels. This is set out in AS 1428.4.1 to give consistent warning at every step change.

For stairs, the warning TGSIs must span the entire width of the path of travel, starting one tread back from the top and bottom nosings. On ramps, it’s similar: the indicators are placed before the slope begins and ends. If there are multiple flights or directional changes, every landing needs a fresh set.

When marking up sites, we also look at adjacent features—like doors opening onto stairs or ramps. Sometimes these trigger the need for extra indicators or careful placement to avoid trip hazards.

Location	Required TGSI Type	Placement Rule
Top of Stairs	Warning	1 tread back from nosing
Bottom of Stairs	Warning	1 tread back from lower nosing
Ramps (top/bottom)	Warning	Before slope starts/ends

Do Kerb Ramps and Pedestrian Crossings Need Tactile Indicators?

Yes, kerb ramps and pedestrian crossings require tactile indicators at both the street and footpath sides, as per AS 1428.4.1. This helps people with low or no vision identify where they’re about to enter a traffic zone or return to the footpath.

Warning TGSIs are placed at the top of kerb ramps (footpath side) and at the transition to the road (kerbside). Directional TGSIs may also be used if a clear directional cue is needed to guide users to the crossing point. This setup is essential for all new or upgraded crossings, whether in a shopping centre car park or on a city street.

If you’re refreshing old crossings or adding new kerb ramps, double check that you’re meeting the current standard. Many older crossings don’t comply with today’s rules—and that’s a common catch in audits.

Are Tactile Indicators Needed at Platform Edges and Transport Stops?

Tactile indicators are required at the edges of public transport platforms and stops to warn of the drop-off or rail zone. AS 1428.4.1 is clear: any platform edge with a risk of falling or stepping into a hazard must have warning TGSIs.

These indicators run parallel to the platform edge, typically set back just far enough to provide warning but not block safe standing space. You’ll also see them at tram and bus stops with raised platforms, and sometimes at ferry wharves. This requirement applies equally in regional towns and major city terminals.

If you manage or upgrade a transport site, remember: the length and setback of the indicators should match the operational area, and maintenance is critical. Faded or loose tiles are a safety risk and a compliance fail.

What About Accessible Paths and Building Entrances?

Tactile indicators are required at key decision points along accessible paths, including building entrances and intersections, under AS 1428.4.1. The goal is to guide users safely through complex spaces and warn of potential hazards.

Directional TGSIs lead people along the path; warning TGSIs are set at intersections, doorways onto busy areas, and where the accessible path splits. If your site has a winding route, multiple entries, or a busy foyer, you’ll likely need both types of indicators.

When we mark up accessible paths, we always check for sightlines and obstructions—bins, planters, or signs in the wrong spot can undermine the whole system. For a broader look at accessible parking and paths, see our accessible parking line marking service.

How Do the Standards Define TGSI Placement?

The placement of tactile indicators is defined by AS 1428.4.1, which covers the minimum requirements for width, length, setback, and pattern. It’s not just about putting a mat down—there are strict rules for size, contrast, and orientation.

Key points from AS 1428.4.1:

• TGSI width must cover the full path of travel
• Setback distances (from hazards) must be consistent
• Visual contrast to surrounding surfaces is mandatory
• Installations must not create trip hazards
• Directional TGSIs must point directly along the accessible path

It’s easy to get caught out by missing these details—especially on retrofits. If you’re not sure, get a professional line marking crew (like us) who know the standards inside out.

Common Mistakes When Installing Tactile Indicators

The most common mistakes when installing tactile indicators are wrong placement, poor contrast, using the wrong type, and skimping on width or length. These errors can leave you non-compliant and put users at risk.

We’ve fixed plenty of jobs where TGSIs were too far from the hazard, didn’t cover the path, or used dots when bars were needed (or vice versa). Another classic error: sticking tiles directly over expansion joints or uneven surfaces, which leads to tripping hazards and early wear.

Check for these issues before you sign off:

• Are the TGSIs the right type for the hazard?
• Do they span the whole width of the path?
• Is the slip resistance up to spec for the environment?
• Is there enough contrast with the surrounding floor?
• Are they installed on a flat, clean surface?
• Do they line up with the actual path of travel?

One missed detail could mean a failed audit or a costly redo. Don’t cut corners.

Step-by-Step: How Are Tactile Indicators Installed?

Installing tactile indicators takes careful prep, exact measurement, and the right materials. Here’s how we typically do it at Line Marking Australia:

1. Site Assessment: Walk the site with plans and AS 1428.4.1 in hand. Identify every hazard and decision point.
2. Mark Out Placement: Chalk or tape out the area, double-checking width, setback, and alignment.
3. Surface Prep: Clean and roughen the surface for good adhesion. Remove dust, oil, or old adhesive.
4. Dry Fit: Lay out the TGSIs for a final check—better to spot mistakes now than after gluing.
5. Install: Fix TGSIs in place (using adhesive, mechanical fixings, or both). Ensure all lines are straight and pattern is correct.
6. Test: Check the finish: feel underfoot, test slip resistance, check for trip points and measure contrast.
7. Clean Up: Remove any residue and check that the area is safe to use immediately.

Every job is a bit different, especially on older or uneven surfaces, but the basics never change: measure twice, mark once, and always follow the standard.

What Should You Check for Ongoing Compliance?

To stay compliant with tactile indicator regulations, you need regular checks for wear, contrast, and correct placement. Even the best-installed TGSIs can fade, lift, or get covered by new works over time.

We recommend including tactile indicators in your regular safety audits. Look for:

• Loose, damaged, or missing tiles
• Faded colour or lost contrast
• Surrounding works (like new doors, fences, or landscaping) that affect access
• Trip hazards from lifting or curling edges

Australian standards and Safe Work Australia both stress ongoing maintenance—not just initial installation. If you ever change your layout or upgrade a site, check if new TGSIs are required or old ones need relocating.

How Do I Choose the Right TGSI Products?

Choosing the right tactile indicator depends on slip resistance, durability, visual contrast, and installation method. Make sure the product is certified to AS 1428.4.1 and suits your environment—outdoor, indoor, high-traffic, or exposed to the weather.

Key factors to consider:

• Slip resistance rating for wet or dry areas
• Material (stainless steel, ceramic, poly, etc.)
• Colour contrast—must be visually distinct from the surrounding surface
• Method of fixing (adhesive, mechanical, or both)
• Long-term warranty and support

It’s worth investing in quality—cheap or DIY solutions rarely last and often don’t meet the standard. If you’re unsure, get advice from a pro installer familiar with the latest standards and products.

Where Can I Find the Official Standards and Guidance?

The official standards for tactile indicators are published by Standards Australia (AS 1428.4.1) and referenced in the National Construction Code. Additional safety guidance comes from Safe Work Australia and Austroads for transport sites.

These documents are the go-to source for technical specs, placement rules, and compliance requirements. If you need a quick overview, our tactile indicator guide pulls together the essentials. For complex sites, get a compliance check from an expert—it’s much cheaper than a fix after the fact.

How Does Line Marking Australia Help With TGSIs?

We’ve marked thousands of sites across Australia, from car parks to train stations. We know AS 1428.4.1 back to front and can advise on every aspect—placement, product choice, and long-term maintenance. Whether you’re in the city or out in the country, we guarantee compliance and quality work.

From initial site survey to final install, we handle the lot. If you’re not sure what your site needs, just upload your plans or request a fixed-price quote. We’ll walk you through every step, so you know it’s done right the first time. Learn more or get started here.

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