We've all seen them: billboards that truly catch the eye – and those that mostly go unnoticed. What’s the secret behind a successful outdoor campaign? Here are five concrete tips (with a pinch of humor) to ensure your billboard has maximum impact.

1. Keep the message short and punchy.

Remember, your audience is zooming by at 50 mph (or hurrying on foot, eyeing the next coffee shop). You only have a few seconds to convey your message. A classic rule of thumb is "seven words or fewer" – after that, you risk losing your reader. Don’t underestimate a driver’s speed: on average, they have about 5 to 8 seconds to see and understand your sign. So cut all the fluff. A catchy punchline, your brand name, and maybe a simple call-to-action will suffice. Think poster, not brochure. If you absolutely need to convey more information – use a QR code or refer to a website for more details. But the sign itself should be like a haiku: short, memorable, and ideally a bit poetic.

2. Invest in strong images and high contrast.

In the outdoor environment, your ad competes with sunlight, neon lights, trees, and a thousand distractions. A visually flat design risks blending into the background. Therefore, use bold color contrasts and clear shapes. Research shows that high contrast can significantly enhance recall of outdoor advertising – with one study showing almost a 38% increase in recognition. Choose colors that pop against the environment (like a bright yellow sign on a gray concrete wall, for instance). Also, ensure the font is readable from a distance: large, clean letters without frills. Forget fancy cursive styles! Test readability: print your design on an A4 sheet, step ten meters back, and see if you can still grasp it. If not – simplify even further. A picture is worth a thousand words, so choose a strong main image/illustration that carries the message almost on its own. Look at iconic campaigns – they can often be summed up in a single image that sticks in the mind.

3. Choose the Right Location and Leverage the Surroundings.

In real estate, it's said "location, location, location" – and the same holds true for billboards. A brilliant idea can fall flat if the sign ends up in the wrong spot. Consider who you want to reach and where that person is moving. Want to connect with commuters in Stockholm? Then perhaps the E4 entrance or the digital boards at T-Centralen are optimal. Looking to attract beachgoers? Place your sign along the road to the coast. Also, adapt the design based on the surroundings: Is the backdrop the sky? Dark colors will work best. Is the sign surrounded by greenery? Then a red/orange tone might create a striking contrast. Some of the most creative campaigns even integrate the environment – such as the classic McDonald's sign designed as a sundial, where shadows pointed to menu items throughout the day. Interaction with the landscape can create a wow effect and earn free media attention. But be careful not to let trees, buildings, or other obstructions block the view; do a proper reconnaissance of the location in person before finalizing it.

4. Be Creative, Dare to Stand Out – but Keep it Understandable.

A memorable billboard often has something unexpected: humor, a clever pun, an optical illusion, or perhaps a 3D detail that literally pops out of the frame. Being different pays off – people will talk about the ad, maybe snap a photo (free spread!), and your brand will be seen as bold. For example: Burger King's famous campaign where a real smoke column emerged from the sign (with the message that their burgers were flame-grilled). However, creativity should not come at the expense of clarity. An internal joke that only your marketing department understands is wasted on the public. Test the idea on someone outside your bubble. Do they get the point immediately? If not, simplify the concept. And be cautious with "controversial and funny" – it's great to stand out, but you don't want to end up in scandal territory because the joke was misunderstood (see post 5 about historical advertising blunders...). Find the balance: just enough cheekiness, but not offensive or incomprehensible.

5. Encourage and Facilitate the Next Step.

An effective billboard doesn’t leave the audience in a vacuum after they've seen it. Think about what you want them to do once their interest is piqued. Should they visit your store? Clearly indicate where ("Next exit – McDonald's 200 m"). Do you want them to check out your product online? Provide a simple web address or a QR code they can scan at the next red light. However, keep the call-to-action straightforward – a long URL or too many options can paralyze rather than inspire. Consider using the same slogan on your billboard as your hashtag or online campaign, so it sticks. Remember, many people actually pick up their phones right away when something captures their attention. As mentioned earlier, a large percentage searches for the company online after seeing a good outdoor ad. Make sure to capitalize on that interest: the landing page must be mobile-friendly and relevant, and if possible, measure the traffic coming in from OOH exposure (e.g., unique codes or special URLs for the campaign). This also provides you with proof that your billboard did its job.

In Conclusion: Test, Learn, Improve.

Just because a billboard is up doesn’t mean the job is done. If possible, check how people are reacting. Are they stopping? Are they talking about it on social media? If your campaign is running for a long time, be ready to tweak things if something isn’t working. Outdoor advertising has become more dynamic with digital screens—take advantage of this if the message can be refined on the go. Follow these tips—keep it brief, strong, well-placed, creative, and action-driven—and your next billboard campaign is more likely to not just pass by in the periphery but truly leave an impression (hopefully somewhere other than the driver’s bumper!).

Sources:

Lamar Advertising design principles (lamar.com), True Impact Media (trueimpactmedia.com), Nielsen via VCO Outdoor (vcoutdoor.com)