In-vehicle vs on-app vs exterior
Highfloor focuses on in-vehicle screens because that's where attention concentrates. The passenger is captive, the screen is in their direct line of sight, and the trip is long enough for sustained exposure.
| Format | Audience window | Attention quality | Best for |
|---|---|---|---|
| In-vehicle screen | Full ride duration (8-22 min) | Captive, sustained | Conversion-window verticals: legal, hospitality |
| On-app (Journey Ads) | App open during ride wait + active ride | Glance-driven, mobile-context | Awareness, app-install, brand recall |
| Exterior (car-top) | GPS-triggered street-level | Brief but high-frequency | Geofenced local awareness |
The conversion window
The under-appreciated insight about rideshare advertising is that the in-vehicle window lands the prospect at the moment a specific case category typically converts. A rider at 1 a.m. on a Friday is in the post-bar window where DUI defense intake spikes. A rider leaving a concert is in the window where the next event ticket gets bought. A rider leaving a restaurant is in the window where the next delivery order gets placed.
Where that timing alignment exists, rideshare is one of the highest-attention OOH placements available. Where it doesn't, rideshare is a generic awareness channel competing with cheaper alternatives: buy a different format.
Creative spec
Rideshare in-vehicle screen ads typically run 15-30 seconds with sound on (the rider can hear the tablet), full-screen, 1920×1080 or vertical 9:16 depending on tablet orientation. The format is more permissive than bar TV because sound is available, but the creative still needs to land in three seconds because the rider can mute or look away. Strong opening visual + clear product identity + supporting message + CTA is the standard structure.
Cost benchmarks
- In-vehicle screen ads: $10-$25 CPM
- On-app Uber Journey Ads: $15-$30 CPM
- Exterior car-top (Firefly): $4-$6 CPM
- Premium dayparts (Fri/Sat 10pm: 2am, sports nights): higher
Measurement
Rideshare measurement combines impression-level reporting from the platform (which devices saw the spot, when, where) with foot-traffic attribution via mobile-device-panel data and branded-search lift. For verticals with phone-based conversion (legal call volume, dating-app installs), conversion-event attribution is unusually clean because the conversion device is often the same device the rider was holding during the ride.
Platform comparison
Uber Journey Ads has the largest in-app surface (Uber's user base is significantly larger than Lyft's). For in-vehicle screens specifically, the inventory is more fragmented: Uber's tablet program, Octopus Interactive, Vugo, and others each cover different vehicle pools. Highfloor specs the right mix per campaign rather than committing to a single supply partner.