scope:

This Japanese Industrial Standard specifies the general requirements and functional requirements for train control systems using radio communication [Japan radio train control system (JRTC)] that communicates control information related to safety on railways between the wayside and train using radio communication. This Standard is also applicable to special railways such as guide rail type railways.

Functions of the train control system that ensure safe movement of trains or car (hereafter referred to as "trains, etc.") are divided into the following five functions:

a) Ensure safe route to prevent derailment or collision of trains, etc. at crossings, turnouts, or other locations.

b) Ensure safe separation of trains to prevent trains from moving outside safe route and colliding with each other.

c) Ensure safe speeds to prevent trains from exceeding speed limit or moving to a route other than the safe route and to keep safe separation of trains.

d) Ensure safe movement of trains passing through level crossings.

e) Ensure safe movement of trains against obstacles on the track, etc.

This Standard applies to a system with automated functions in a) to c). However, it does not apply to automatic train operation without onboard staff.

Furthermore, this Standard also applies to systems that perform automatic operation regarding acceleration, coasting, and deceleration between stations and stopping within constraints of the above functions.