Technical overview
How {{PRODUCT_NAME}} measures a road.
The detail behind the four steps: what the survey unit carries, how data moves from the car to the public map, and how depth becomes severity.
Data pipeline
Video stays in the car. Faces and number plates are blurred before upload; only records and evidence frames leave the vehicle.
Hardware
| Role | Component | What it does · vendor figures |
|---|---|---|
| AI computer | NVIDIA Jetson Orin Nano | Detection, tracking and depth measurement in the car; local SSD; works offline |
| Front depth camera | Intel RealSense D455 | Active IR stereo + RGB · 95 mm baseline · global-shutter depth · 87° × 58° depth FOV · ideal 0.6–6 m · < 2 % error at 4 m · USB-C 3.1 |
| Side cameras | Left + right colour cameras | Kerb-side lanes on both sides in one pass |
| Motion | Accelerometer + gyroscope | Jolt when a wheel hits a pothole — a second, physical confirmation |
| Position | Dual-band GNSS receiver | Lane-level location for every detection |
| Review | 10-inch in-car display | Operator sign-in, assigned route, live confirm / reject |
| Mount | Roof-rack sensor bar | Clamps to a standard rack; no drilling |
Depth method
- 01
Aligned capture
Depth and colour frames from the D455 are captured together, so every detection box has depth behind it.
- 02
Fit the road plane
The surrounding road surface is fitted as a plane; depth is measured as distance below that plane, not from the camera.
- 03
Measure
Maximum depth, width and area of the region below the plane. Values come from a single calibrated sensor on every car.
- 04
Cross-check
A detection with no depth below the road (a shadow or tar patch) is flagged "flat" and sent to review, not counted.
- 05
Water
Standing water reads shallow. Water-filled potholes are flagged "water suspected" and are never reported as shallow.

Concept visualisation · example reading
Severity bands
Severity follows measured depth, using the ASTM D6433 pothole depth bands. Width and area are recorded alongside for repair planning.
Low
13–25 mm
Scheduled repair
Medium
25–50 mm
Prioritised repair
High
over 50 mm
Urgent repair
Below 13 mm is recorded but not classed as a pothole. Thresholds are configurable per agency.
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