位置参考消息规范（LRMS）标准化了ITS应用程序的位置参考，这些应用程序需要在数据库之间通信空间数据参考。ITS数据库可能位于中央站点、车辆或道路上或道路外的设备或其他交通链接中。LRMS适用于可在无线或陆线网络上实现的同质（相同数据库）和混合数据库环境。虽然LRMS是为ITS应用开发的，但它也可用于非ITS应用以及地理信息处理领域。

The Location Referencing Message Specification (LRMS) standardizes location referencing for ITS applications that require the communication of spatial data references between databases. ITS databases may reside in central sites, vehicles, or devices on or off roads or other transportation links. The LRMS is applicable to both homogeneous (same database) and mixed database environments that may be implemented on wireless or landline networks. While developed for ITS applications, the LRMS may be used for non-ITS applications as well within the field of geographic information processing.