5 Design Tips for an Effective Billboard

Billboard advertising is one of the most traditional forms of marketing or advertising. And yet, not every billboard is effective. The right billboard can capture large audiences with compelling, visual messaging - the wrong billboard can cause confusion and a mismatched branding campaign.

Designing an effective billboard is the tricky part. For a billboard to effectively communicate its message to viewers, the design must account for audience perception, location, and the core message that’s being communicated. 

That being said, you don’t need to be a creative art director to come up with a billboard design that works well. Here are 5 tips to help you design an effective billboard.

5 Tips for an Effective Billboard Design

1. The 6-Second Rule

Audiences in the 21st century are more cognisant of marketing messages than ever - a 2025 report by Clutch found that 93% of consumers skip or block ads, especially on digital platforms. 

Billboards can’t be skipped or blocked, but they can still fail to have an impact when viewed. In the Out of Home (OOH) advertising industry, we call this “billboard blindness”. This usually happens when there is too much information on the billboard design to process, causing viewers to automatically filter it out as “background noise”.

The 6-second rule is considered best practice for billboard design - it means that the billboard must be fully understood, processed, and remembered within six seconds. Drivers can only take their eyes off the road for two or three seconds at a time, and commuters have a hundred other competing ads around them, so every second counts when a billboard is viewed.

Run a simple test by creating a mock-up of the billboard design and have test groups view it for six seconds or less. If viewers can accurately recall and understand the message that was being communicated, you know it’s doing its job.

2. Minimal Copy

A well-designed billboard can communicate complex ideas in a single glance. Past research has shown that single-minded, focused billboard ads deliver more impact compared to those that are cluttered with lots of words or information to process.

If you plan to include copy in the billboard design, we recommend keeping it within seven words to minimise reading. Remember, if your billboard can’t be understood after a glance, it will fail to communicate its message. 

As a general rule, the more messages are included in a billboard’s design, the lower its projected impact on awareness in audiences. Focus on one (or two) key messages you want the billboard to communicate and run with it.

3. Contextual Design

The billboard design should consider position and placement throughout the campaign. If the billboard is designed to drive traffic to a business location, including brief directions (e.g. 100m from next exit) and arrows in the design can provide essential contextual information for audiences to take action.

These contextual elements can also work to enhance the impact of the message; for example, a billboard at the airport can include visuals and copy that speak directly to travellers rather than a general audience.

4. Visual Contrast

Effective billboard design often uses strong visual contrast elements, mixing light and dark colours to achieve graphics that “pop” and attract attention. Black on yellow is consistently ranked as the most visible combination, white on dark blue is frequently used by professional services to convey trust, and white on red has been found to be effective in communicating urgency and calls to action.

Visual contrast can also be achieved using a reflective billboard skin. This material reflects the light of oncoming traffic, allowing the design to stay visible in the dark without the need for on-site lighting. 

Most businesses generally stick with brand colours, which may not always produce striking visuals. If you find it difficult to achieve visual contrast with brand colours, work with an experienced graphic designer. Here at POA, we have an in-house billboard design team that has worked on award-winning billboard designs on behalf of our clients.

5. Break the Frame

Audiences are accustomed to the standard size and shape of billboards - a billboard design can be more effective in attracting and retaining attention when it breaks this convention using extensions. Billboard extensions and overlays are a creative way to expand the design past the borders of the billboard. 

A study from AMW indicated that billboards that break the traditional rectangular format capture more than double the amount of attention (118%) than standard designs. Not only that, but a billboard with creative 3D elements has the potential to be shared online on social media, further increasing awareness and reach. 

POA has over 40 years of experience in the billboard advertising industry - we have an expansive network of over 2,000 billboards across Brisbane, Cairns, Hervey Bay, and the rest of Queensland.