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DOOH advertising in digital billboards
Digital billboards are the highest-reach format on the Trillboards network, delivering 1,100 daily impressions each.
- 128
- Screens on the network
- $4.92
- Average floor CPM, USD per thousand impressions
- 1,100
- Daily impressions per screen
- 18
- US cities
Audiences you can buy here
16 curated segments run on our outdoor inventory. Each is a live private marketplace deal, addressable from your DSP today.
What you are buying
Digital billboard DOOH delivers mass reach for low effective CPM. The average screen serves 1,100 impressions per day to a commuter and driver audience that values brevity and big visuals. Buyers in automotive, telecom, consumer packaged goods, and brand-awareness campaigns are the highest-spending category in this segment.
- commuters
- mixed group
- drivers
Where the supply is
The five US cities carrying the most digital billboards on the network. Counts are aggregate, no per-screen identifiers are published.
- 1Rosemont, IL
- 2Austin, TX
- 3Elmhurst, IL
- 4Livermore, CA
- 5Roselle, IL
Digital billboards in the DOOH ecosystem
Digital billboards remain the iconic out-of-home format and are one of the most measurable digital media surfaces in advertising. Trillboards digital billboard inventory is geographically distributed across Texas (Austin), Illinois (Rosemont, Elmhurst, Roselle), California (Livermore), plus international markets. Floor CPM of $4.92 USD reflects the prime-time scarcity of premium board positions, buyers pay above-network-mean rates for daypart-matched placement on high-throughput corridors. The Trillboards platform serves billboard inventory through the same OpenRTB 2.6 DOOH protocol used by every other format on the network, meaning DSP buyers can layer billboard, in-venue, and transit placements into a single audience-targeted campaign without separate integrations.
How the buy executes at digital billboards
Each screen runs the Trillboards kiosk app on an open OpenRTB 2.6 connection to our SSP. Roughly every 30 seconds, the device fires an ad request carrying the IAB DOOH inventory descriptor, venue category, location, screen format, plus the live audience measurements from the on-device CV pipeline.
Demand-side platforms bid in under 100 ms. The winning creative ships back, plays in the device's native VAST player, and confirms playback with a signed proof-of-play receipt. Those receipts reconcile daily against partner-reported numbers, which is the record we bill against.
We serve first-party and third-party VAST, OMID viewability where the creative declares it, and device-signed proof of play, meeting the OAAA measurement standards and the IAB DOOH 1.0 specification. Buyers on our OpenRTB endpoint target digital billboards through the IAB Audience Taxonomy and the Trillboards segtax=600 namespace, and receive no per-screen identifiers in the bid request.
If you own the venue
Digital billboard operators, typically property owners adjacent to high-traffic roads or downtown corridors, host Trillboards-served screens that auto-rotate creatives sub-second per OpenRTB DOOH protocols. Trillboards handles all demand wiring and reports aggregate plays back to the operator monthly.
Where these numbers come from
Screen counts, floor CPM, daily impressions and city rankings are aggregated from the Trillboards PostgreSQL system of record (earner_screens, filtered to status = 'approved') joined to the venue taxonomy, snapshotted 2026-05-11 and rebuilt monthly. Floor CPM is the screen-level minimum; cleared CPMs typically run 20–40% higher with demand. Audience index, price and market count come from the live curated catalogue. This page publishes no per-screen, partner or device identifiers.