As automated and highly-automated vehicles (HAVs) are gradually deployed on public roads, regulators globally are faced with the challenge of ensuring that these systems are safe for the public that are exposed to them. This challenge requires coordination of validation activities between national regulators and system developers – with common (or at least aligned) approaches to validation desirable. 

One of the big challenges for regulators is achieving enough coverage of real-world situations to know that Automated Driving Systems (ADS) are acceptably safe. Automated Driving System (ADS) developers are now indicating that testing by driving vehicles on public roads alone is not sufficient, due to: 

  • The large number of miles needed to ensure sufficient coverage of the situations which will be encountered by a fleet of HAVs  
  • Issues over the lack of control of the test parameters 

The solution is likely to involve more than one technology, but will almost certainly include an element of simulation. 


MUSICC is creating a system to store and share a library of scenarios: an ADS will be expected to demonstrate its performance in these before release to market. As far as we know, MUSICC is the first project of its type to build a proof of concept system specifically designed for regulatory use. This gives it a strong potential to become a de facto standard. MUSICC will help to shape the future direction of the industry, positioning the UK as the “go-to” place for CAV certification testing backed by government. 

Organisations involved 

The project is led by a regulator (Department for Transport) and an impartial, neutral mediator (Connected Places Catapult). It is influenced by a highly credible industrial advisory group, including representatives of several major OEMs, tool providers, ADS developers, research and innovation organisations, CAV testbeds and insurers. 


A functional prototype system has been built and is undergoing user trials with interested stakeholders. We are now starting the second phase of the project, which involves gathering feedback from real users and understanding how test scenarios might be used in a future regulatory regime.

MUSICC symposium, 24 June 2019

The Multi User Scenario Catalogue for Connected and Autonomous Vehicles (MUSICC) Symposium brought together industry experts who share an interest in the verification and certification of CAVs / Highly Automated Vehicles (HAVs), to inform the direction of the MUSICC project.

List of speakers (with slides where available):

Keynote speech by Donald Macdonald (Department for Transport)
Connor Champ (Law Commission) The challenges of regulating automated vehicles
Zeyn Saigol (Connected Places Catapult) Vision for MUSICC
Iain Whiteside (FiveAI) Towards a Digital Highway Code
Tim Edwards (Horiba MIRA) The role of physical testing in the CAV engineering lifecycle
Alex Grandjean (AV simulation) AV systems validation using SCANeR™studio simulation SW

MUSICC Symposium 2019 – Outcomes from interactive sessions

Get involved 

Benefits of involvement 

Participation will enable entities to contribute to a system that will be considered as a basis for the future international certification of HAVs. 

For ADS developers and OEMs, participation promises a faster route to market, assuming that future certification could be driven from a single database as opposed to having to meet differing criteria for the different markets around the globe. It also provides a transparent way to demonstrate to the public that their HAVs are trustworthy and safe. 

For regulators and testing/certification bodies, participation will free resources to focus on the core aspects of the problem, such as the scenarios themselves and how to test them. The MUSICC project will handle the systems and software engineering involved in creating a live database, while still allowing stakeholders to actively contribute to the scenario definition format.

User trials 

The MUSICC system is currently in a beta test phase. If your organisation is a potential user or other stakeholder, please contact to get involved in the test programme. 







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