ISO 13183:2012为陆地移动通信接入系列（CALM）相关国际标准规定了智能交通系统（ITS）的体系结构通信框架。通过几个图形视图和示例，以抽象的方式描述了该体系结构。图形表示部分遵循ISO开放系统互连（OSI）原则。 除了ISO 13183:2012中规定的要求外，还提供了一些注释和示例来说明CALM概念。

ISO 13183:2012 specifies the architectural communications framework of intelligent transport systems (ITS) for the family of communications access for land mobiles (CALM) related International Standards. The architecture is described in an abstract way with several graphical views and examples. The graphical representations partly follow the ISO open systems interconnection (OSI) principles. In addition to the requirements specified within ISO 13183:2012, a number of notes and examples are provided to illustrate the CALM concept.