Bilder: Trafikverket

Research Program 


The program “Capacity in the railway traffic system” (in Swedish: Kapacitet i järnvägstrafiken – KAJT) aims at strengthening the railway systems ability to meet the transportation needs of society. The research goal in the program is to optimize the usage of the railway system and create efficient and reliable traffic movements with associated services. KAJT contributes to providing the railway industry with better concepts, tools and methods based on infrastructural conditions at strategic, tactical and operational level so that Swedish railway become the world leader in efficiency, quality and flexibility.


The program takes the entire process and validity of the train schedule into account. It is important to see the whole picture and that research within different parts of the train planning process has insight into related areas. This includes maintenance work and scheduling maintenance work, as well as the impact of the timetable and maintenance on the railway operators’ traffic. The overall approact to the current issues in the proposed industry program provides a holistic view along the entire traffic planning, its implementation and follow-up.


The holistic view of the future efficient train traffic process is a potentially important success factor. The individual research groups cooperate and support each other within various sub-projects. As a result, the traffic process can be seen as a whole. It is ensured that the combined program’s competences can interact in projects to find solutions to central challenges. An example of this may be to see traffic planning and operational control as parts of the same process, and that it is only when these can be made to collaborate that the whole becomes good. Another example may be not only studying automated systems within traffic control or only support human controllers, but studying applications in operational context and thereby creating solutions that have the greatest possible conditions to function in practice.



Core research areas

  • Strategic capacity planning
  • Tactical capacity planning
  • Operational traffic control and train operation


Complementary research areas

  • Future transport system and traffic demand
  • Railway side system and connection to the railway network
  • Planning of transport networks, vehicles and personnel
  • Maintenance and traffic
  • Digitalization and automation in train planning process and operations
  • Traffic information
  • Managing major disturbances
  • Follow-up and feedback


International collaboration and Shift2Rail


KAJT related projects


Branschprogram Kapacitet i Järnvägstrafiken

Postadress: Branschprogram KAJT, c/o SICS Swedish ICT, Box 1263, 16429 Kista

E-post: info@kajt.org    Telefon: +46 (0) 705 709 992