This guideline defines the message specifications for an inter-vehicle communications system to be used experimentally for testing communication between mobile stations in an environment where inter-vehicle/roadside-to-vehicle communications are carried out in accordance with the "700MHz Band Intelligent Transport Systems" (ARIB STD-T109), also including cases where the "700MHz Band Intelligent Transport Systems - Extended Functions Guideline" (ITS FORUM RC-010) is used together.

Also, assuming that applications utilizing the 700MHz band intelligent transport systems are going to be diversified in the experiment, the definition of information used for message identification is defined and described in the appendix.

It is hoped that this guideline will fully be verified by organizations and other parties which utilize the respective standards for thorough practical verification and validation testing.