A bespoke test methodology to accommodate new ADAS requirements

Case Study Overview

HORIBA MIRA was engaged by a major OEM to develop a safe and effective test methodology for evaluating Driver Drowsiness and Attention Warning (DDAW) systems.

DDAW testing is a new requirement brought in by the General Safety Regulations 2 (GSR2). There is no established methodology, so HORIBA MIRA engineers defined their own test procedure, drawing on experience of working with ADAS and certification testing.



HORIBA MIRA devised a methodology for the test requirements of the GSR2 regulations. This required a minimum of ten test participants to drive in the safe environment of the proving ground while self-assessing their level of drowsiness against the Karolinska Sleepiness Scale (KSS).

The drivers were trained to understand and apply the KSS scale. Cameras were installed in the test vehicles for supplementary observations and tests were performed to ensure that the safety backup driver could safely bring the car to a stop if the driver fell asleep.

Initial testing on the DDAW system fitted to the vehicle helped the OEM to understand their current system performance against regulatory requirements and identify necessary modifications. Following development and updates, subsequent testing ensured the system performance met the required standard.

Successes and benefits

This project demonstrates HORIBA MIRA’s ability to respond to forthcoming regulations with an effective test methodology. Key points included:

  • Developing procedures to ensure the tests were carried out safely and accurately.
  • Characterising the operation of the DDAW system so the OEM could understand its operation and minimise risk.
  • Identifying efficiency improvements including ways to accelerate fatigue to reduce test time.
  • Sourcing and training representative test participants.

To carry out this testing we had to develop a whole new test methodology. We did that by combining the practical experience of our ADAS test team with our Certification and Homologation group’s experience of working with type approval regulations.
Aaron Mandalia, Solution Leader for Connected & Autonomous Vehicles, HORIBA MIRA

Project Information

Project Information

  • ADAS & Certification
  • Passenger & Commercial Vehicles
  • Locations – UK, EU, Asia

Added Value

Added Value

  • Evaluation of DDAW performance against regulatory requirements
  • Delivery of DDAW certification documentation

This new methodology was successfully applied to development activity to ensure the system met the regulatory requirements, pre-testing, and official type approval testing.

Engineering team deployed: A core team of five engineers in the UK