A DBC file is a Communication Database for CAN. It is the distributed system's backbone. DBC files are basic text files that include information for decoding raw CAN bus data to physical values or in human-readable form. They specify which signals (e.g., RPM, Vehicle Speed, etc.) are contained within specific messages (i.e., CAN IDs). In developing a distributed ECU network based on CAN, a key component is the communication description in the form of DBC files. Described in DBC databases are the properties of the CAN network, the ECUs connected to the bus, and the CAN messages and signals.