By Alvena Ode, Founder & CMO, Blastily · 8 min read

"How do I know if it worked?" is the question that stops many businesses from investing in billboards, TV and radio. The good news: you can measure OOH advertising and broadcast campaigns. It just takes a plan set up before the campaign launches. This guide is the hub for our measurement content. It explains the framework, then answers the 30 questions businesses ask most.
| Level | What it answers | Example metrics |
|---|---|---|
| 1. Delivery | Did the ad run and reach people? | Impressions, reach, frequency, CPM, airing logs, proof of posting |
| 2. Response | Did people act? | Branded search, direct traffic, vanity URL visits, calls, code redemptions, foot traffic |
| 3. Brand | Did perceptions change? | Awareness, recall, consideration (surveys) |
| 4. Business | Did it pay off? | Leads, sales, customer acquisition cost, ROI |
Set a baseline for each metric before launch. Without a "before," there's no way to see the "after."
Define the goal first (awareness, traffic, leads, sales), then pick metrics from the four levels above, set a baseline, and compare during and after the campaign.
"Saw or heard" comes from audience data: COMMB for out-of-home and Numeris for radio and TV in Canada, provided through vendors. "Took action" comes from unique URLs, codes, calls, search lift and surveys.
Ask for the audience composition of each station, program and daypart you're buying, and compare it with your customer profile. Then check whether responses come from the people you expected.
Estimate incremental revenue (sales above your baseline or above a control area), subtract the campaign cost, and divide by the cost. The full method is in how to calculate billboard ROI.
Yes: call tracking, QR and short-link analytics, search trend tools, location-data platforms, brand lift surveys, and on some digital screens, anonymous audience-counting sensors.
Response can show within days; awareness builds over weeks. Evaluate over the full flight plus a few weeks afterwards.
Survey your target audience before and after the campaign on unaided awareness ("which brands come to mind?") and aided awareness ("have you heard of…?"). We'll cover this in brand lift studies explained.
Yes. Website visits through dedicated URLs and traffic patterns in the campaign area; store visits through consented location data, promo codes and in-store surveys.
Yes. Digital captures and measures the interest offline ads create. See radio vs. digital ads.
Vendors and industry bodies publish studies, but benchmarks vary widely by category, market and creative. Your own baseline and control market are the most reliable benchmark.
At minimum: reach, frequency, CPM, branded search lift, dedicated-URL traffic, calls or code redemptions, and cost per acquisition. More in advertising KPIs that matter.
If recall and response are still rising as frequency grows, you probably need more; if response flattens, you may have enough. See how many times people need to see your ad.
Yes, with consented, aggregated data from reputable providers and a proper control group. See foot traffic attribution.
Use indirect signals: branded search, direct traffic, sales in exposed vs. unexposed areas, and brand surveys. But adding a simple call to action almost always helps.
Yes. Rotate creatives across markets, time periods or boards, each with its own tracking, and compare. We'll cover it in how to A/B test offline creative.
Buy by audience data, not by habit: stations whose listeners match your customer, boards on your buyers' routes, programs your audience watches.
Usually a weak offer, an unclear or hard-to-remember call to action, or a poor experience after the ad. Full diagnosis: high visibility, low sales.
Billboards: about seven words, one idea. Radio: brand name repeated, one action, sound identity. TV: brand early, show don't tell, supers for sound-off. See our billboard guide, radio guide and TV guide.
Map where your customers live, work, commute and buy, then pick boards on those routes with strong visibility. See choosing billboard locations.
Match dayparts and programs to your audience's viewing habits, using ratings data from your station or buyer. See TV ad scheduling.
Simple melody, brand name sung clearly, one idea, and consistent use over time. See how to create a jingle people remember.
Only if the person fits your brand, your audience trusts them, and the budget doesn't starve frequency. Local personalities and radio hosts can deliver trust at a lower cost. See are endorsements worth it?.
Give them a reason (a time-limited offer) and an easy way (short URL, code, directions, QR code where people can safely scan). See turning OOH views into action.
Ask every new customer how they heard about you, run short post-campaign surveys, and compare recall between people in exposed and unexposed areas. See using surveys to measure offline ads.
Capture them (email, SMS, loyalty sign-up), deliver a great first experience, and follow up. See customer retention strategies.
Bold, simple visuals; high contrast; a short, rhythmic line; the brand shown large. See billboard design for recall.
Own one distinctive element (a colour, a character, a sound) and use it consistently everywhere. See brand identity.
Listen first, respond quickly and honestly, fix what's genuinely wrong, and have a plan before you launch. See handling ad backlash.
Often, yes. Local landmarks, language (including French in Quebec and bilingual markets) and local offers boost relevance. See localizing billboard and radio ads.
Watch for declining response at steady spend, creative that's been up for many months, and changes in traffic patterns around the location. See signs it's time to change creative or location.
The single biggest mistake is launching first and asking how to measure later. Decide your goal, baseline, tracking and control before the first spot airs, and offline advertising becomes as accountable as any digital channel.
Yes. Combine audience estimates from the vendor with outcome measures: branded search lift, traffic to a dedicated URL, promo code redemptions, foot traffic from consented mobile location data, and sales in exposed versus unexposed areas.
Reach, frequency and cost per thousand for delivery; branded search, direct traffic, calls and code redemptions for response; brand awareness and recall for brand impact; and leads, sales, customer acquisition cost and return on ad spend for business outcomes.
Direct response (calls, searches, visits) can show within days of the first airings. Brand awareness usually builds over several weeks of consistent frequency. Plan to evaluate over the full campaign plus a few weeks after.
Give each channel or placement its own vanity URL, promo code or phone number, and ask every new customer how they heard about you.
Want this done for you? Blastily plans and places PR, press releases, radio, TV and out-of-home campaigns for growing brands across Canada and beyond.
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