Table 3 classifies train operation duties by type of work and shows various related safety facilities. As shown in this table, the basic facilities for transport operations are blocking devices, signal devices, and traffic control facilities which control train groups. Various modernized facilities which support these basic facilities are also shown.
The abbreviations used in the table are as follows.
* ATS: Automatic Train Stop
* ATC: Automatic Train Control
* ARC: Automatic Route Control
* PRC: Programmed Route Control
* CTC: Centralized Traffic Control
* ATO: Automatic Train Operation
Table 3 Train operation duties and safety facilities
