Denmark – Consultative engineering and construction services – Formal Methods Consultancy

Metroselskabet and Greater Copenhagen Lightrail I/S (hereafter the Client) is procuring a consultancy contract to support and enable the production of a formal method specification for the CBTC systems used on the metro in Copenhagen. The Client intends the use the formal method specification for the following two projects: 1) The future M5 line (requirement specification phase starts in 2024) 2) Resignalling of M1/M2 (3XR) (requirement specification phase starts in 2026-2027). The consultant will be expected to collaborate with other consultants employed by the Client and with the Client´s staff for indentification of generic and specific requirements for the CBTC system, provide training in application of formal methods and will be expected to support and enable the creation and verification of the CBTC formal specification in close cooperation with the Client´s staff. The project is divided into the following Stages: 1) Developing requirement specification for the formal method and testing of the method 2) Implementing the formal method and training of the Client´s staff . The Client reserves the right to terminate the contract by the end of Stage 1 if the development and testing of the formal method in Stage 1 is not successfully or if it is assessed that the method does not provide the savings expected by the Client. Despite having introduced two driverless metro systems in Copenhagen, the Client has very limited and practical experience with the use of formal methods and formal specifications. The consultant should provide expertise and practical experience within the domain enabling work as "one team" with the Client. This work will be based on the organisation´s experience and knowledge about the functionality and operation. It is the ambition to create the formal specification in close collaboration between the Client and the consultant. The consultant should also provide the necessary training and knowledge of the transfer in process. The Client expects the establishing of formal requirement specifications for the CBTC system will reduce the risk in procurement of such systems as well as reducing the cost to develop and approve the systems, by enabling automation of code generation and efficient safety verification. A formal approach will also help drive the cost down with efficient management of change requests.