What ADAS Road Test Logs Are And Why They Matter
ADAS (Advanced Driver Assistance Systems) use cameras, radars and lidar to read road markings, vehicles and hazards. A road test log is the evidence that, after calibration, those sensors detect correctly and the system behaves as the manufacturer intended on real roads. It confirms targets were aligned, fault codes were cleared and the system is stable in use.
This record supports insurance claims, MOT readiness and helps prevent recurring dashboard warnings. Our ATA‑qualified technicians bring 25+ years’ experience to every job. For timing and process after glass work, see ADAS calibration after windscreen replacement and our guide on when ADAS must be recalibrated in the UK.
When Calibration And Verification Are Required
Book calibration (and a verification drive) if any of the following apply:
- Windscreen replacement or repair near the camera area
- Camera/radar removal, new sensor bracket or any front‑end impact
- Suspension, ride height or wheel alignment changes
- ECU updates, battery disconnection or software changes affecting ADAS
- ADAS warning messages, loss of lane assist or adaptive cruise functions
- Windscreen or bracket movement, even if slight
A verification drive then confirms OEM targets are met in live traffic and lighting, supporting MOT checks and insurer expectations. If you are booking work, our windscreen replacements and windscreen repairs pages explain how we link glass work with same‑visit calibration.
Preparing For Calibration: Correct Glass, Sensors And Setup
Accuracy starts with the right windscreen and correctly mounted sensors:
- Verify VIN and spec; match E‑marking and features (rain sensor, HUD, acoustic or solar coatings)
- Confirm OEM‑equivalent optical quality; see choosing the right windscreen and VIN verification and OEM vs aftermarket E‑marking and ECE R43
- Clean camera/radar windows; check vehicle load, tyre pressures and ride height
OEM means original manufacturer specifications. ECE R43 is the European safety and optical standard for vehicle glazing. Incorrect glass or a misfitted bracket can block calibration or cause false readings.
This image was generated with AI and may not always represent the product or service exactly.
Static Vs Dynamic Calibration: Choosing The Right Method
Static calibration is performed on a level surface using precision target boards at set distances and heights. We connect via OBD (on‑board diagnostics), run the guided routine and confirm there are no DTCs (diagnostic trouble codes). Learn more: static vs dynamic ADAS calibration.
Dynamic calibration is completed on the road within specified speed windows on lanes with clear markings. Some manufacturers require both. We always follow the method defined for your vehicle.
Target Setup: Our Precise Process Before Any Road Test
- Confirm a level floor, set a vehicle centreline and lock steering position
- Place and align targets with lasers/line tools; measure distances and heights to the millimetre
- Control ambient lighting to avoid glare and ensure high‑contrast target visibility
- Verify tyres, pressures, vehicle load and steering angle initialisation before starting
This disciplined setup underpins safe, repeatable outcomes, whether mobile or in our workshop, and sets up a clean verification drive.
The Verification Drive: Building A Safe, Repeatable Route
- Pre‑planned route with clear lane markings and consistent speed limits
- Mix of urban and dual‑carriageway to meet OEM conditions
- Weather check: if heavy rain, fog or strong glare would affect accuracy, we reschedule
- Two‑way communication and avoidance of high‑risk roads and peak congestion
The goal is a controlled environment so ADAS can initialise and confirm alignment reliably.
What We Record: The ADAS Road Test Log Contents
Your log includes traceable data that proves calibration quality and on‑road performance:
- Vehicle identification and VIN
- Pre‑scan of DTCs, guided calibration steps and screenshots
- Live ADAS data during the drive (e.g., lane recognition status, radar object tracking, calibration stability)
- Post‑scan confirming no active faults or warnings
- Timestamps, mileage, speed ranges, weather and route conditions
- Technician name and ATA ID for traceability
All values must sit within the manufacturer’s tolerances; anything outside is investigated before sign‑off.
This image was generated with AI and may not always represent the product or service exactly.
Pass Criteria, Tolerances And Sign‑Off
- Alignment within OEM tolerance windows
- Stable system status (e.g., lane detection available and tracking)
- No active DTCs or dashboard warnings after the post‑scan
We follow the exact data for your make and model rather than quoting generic numbers. Sign‑off includes technician validation and a concise customer summary. Fleet Motorglass stores a digital copy to support roadworthiness checks, MOT queries and insurer audits.
If The Log Flags An Issue: Fast Troubleshooting
- Re‑check target setup, ride height and wheel alignment
- Confirm correct glass, E‑mark and sensor bracket fit; clean sensor views
- Re‑calibrate, re‑test and review OEM procedures or technical bulletins if needed
Our priority is minimal downtime for fleets; we offer 24/7 response to keep vehicles safe and productive.
Mobile Convenience Across Beds, Bucks And Herts
Our mobile teams set up on site to OEM standards where space, lighting and safety allow. If weather is extreme or space is tight, we recommend our controlled workshop to protect accuracy and your time.
We cover Bedfordshire, Buckinghamshire and Hertfordshire with fast response and competitive pricing. The same ATA‑qualified technicians handle cars, vans and commercial vehicles.
What You Receive: Clear Documentation And Peace Of Mind
You receive a digital PDF report containing:
- Pre/post scans and calibration steps
- Screenshots and route notes
- Pass/Fail outcome with any advisories
It is easy to share with insurers and fleet managers, and we store a secure copy for future reference.
Related Reads To Help You Choose The Right Glass And Service
Need help choosing the right windscreen for ADAS? Learn what the markings mean, how to match sensors and HUD features, and why optical quality matters. Understand static vs dynamic methods and how tinting interacts with sensors and legal visibility rules.
If in doubt, ask us to verify your VIN and spec before booking. The right glass and setup ensure smooth calibration and fewer delays.
FAQs
How long does calibration and the verification drive take?
Most jobs take 60–120 minutes, depending on the vehicle and method. Complex setups or poor weather can extend this. We will confirm timings when we book your job.
Can you calibrate at my home or workplace?
Yes, if space, lighting and safety meet OEM conditions. If not, we will recommend a workshop visit to protect accuracy and save you time.
What if the weather is bad on the day?
Heavy rain, fog or strong glare can block dynamic calibration. We will reschedule the verification drive or complete the static step first, then return to finish.
Will I receive proof for my insurer or fleet file?
Yes. You receive a digital road test log and calibration report with scans, screenshots and pass confirmation. We keep a copy for audit and compliance.
Do I need calibration after a small windscreen repair?
Often no, but it depends on sensor proximity and any bracket movement. We will assess your vehicle and advise if calibration or a verification drive is required.
What vehicles do you cover?
We service cars, vans and many commercial vehicles with ADAS. Tell us your make, model and year, and we will confirm the exact procedure and availability.