Low overpass-clearance and vehicle length warning device
Know about the low bridge before your roof does.
The Intulon OVAPAS is a standalone dash device that warns RV and truck drivers — with a loud beep and a glanceable e-ink message — when the road ahead has an overpass too low, or a stretch too restricted, for your vehicle. No subscription. No phone app. No internet while you drive.
How it works
Set it once. Then just drive.
There is nothing to pair, install, or subscribe to. The OVAPAS already knows where the low bridges are — it only needs to know your vehicle.
Set your vehicle
Two numbers — height and length — entered once with the two front buttons. The OVAPAS remembers them forever.
Vehicle height setup
Drive
The OVAPAS quietly watches the road ahead and shows the next overpass on record — clearance and distance — as you approach.
Upcoming overpass, no hazard — just information
Get warned in time
Too low for your vehicle? A loud two-tone alert sounds at your chosen warning distance, repeats until you are past, and escalates as you close in.
Oncoming low-clearance hazard
Features
Why OVAPAS
Fully offline
The complete hazard database lives on the device. Mountain pass, dead zone, doesn't matter — warnings never depend on coverage.
Height and length
Low clearances and posted vehicle-length restrictions — like the switchback limits on mountain parkways — in one device.
Set it once
Enter your height and length once. OVAPAS warns at your chosen distance, repeats until you're past, and escalates when it's urgent.
Nationwide hazard database
Tens of thousands of documented low clearances and restrictions across the US, curated by Intulon and refreshed with free database updates.
Sunlight-readable
E-ink display stays legible in direct sun on the dash, where phone screens wash out. The buzzer does the urgent talking.
Updates in minutes
A free updater app for Windows, macOS, and Linux fetches the latest firmware and hazard data and applies them over USB. No account, no pairing. Get updates →