ISO 17515-1:2015通过指定ISO 21218中规定的通信接口的“通信适配层”（CAL）和“管理适配实体”（MAE）的细节，以及参考ISO 25111的会话管理，使E-UTRAN蜂窝网络技术能够作为ITS站中的ITS接入技术使用。 在可行的情况下，ISO 17515-1:2015的这一部分是通过参考合适的现有标准制定的，并通过选择采用。

ISO 17515-1:2015 enables usage of the E-UTRAN cellular network technology as an ITS access technology in an ITS station by specifying details of the "Communication Adaptation Layer" (CAL) and the "Management Adaptation Entity" (MAE) of communication interfaces specified in ISO 21218, and session management by reference to ISO 25111. Wherever practicable, this part of ISO 17515-1:2015 has been developed by reference to suitable extant standards, adopted by selection.