Definitions

Basic data All data that is the basis for a project, often used as a designation for various map sources.
BIM BIM; Building Information Model is an integrated method for better administration of data and information flow by digitizing a railway facility throughout the life cycle. BIM is both a model and a working methodology, and must be central in all the project's activities and collaborate between all parties in the project. This includes information exchange based on open standards and model-based work processes for better quality, communication and handling of data and information.
BIM models In this document, «BIM models» are used as a collective term for basic and professional models
Basic models Models that describe the existing situation - terrain, ground conditions, objects and defined areas or places.
Professional model Models that describe what is to be built. Each subject has its own model (s) that contain only subject-specific elements.
Coordination model A model that links all the professional models and basic models to a common model. It shows all the models together where you can see and compare the entire project together, and is the basis for other display models and result models.
Display model Coordination model that is adapted for use as presentations in various forums such as design meetings, public gatherings, approval and consultation rounds, etc. The visualization model contains generated defined surfaces / textures that give the model a reality impression and allow movement in the model.