layered solution that enables continuous or quasi continuous communications between vehicles and the infrastructure, or between vehicles, using such (multiple) wireless telecommunications media that are available in any particular location, and which have the ability to migrate to a different available media where required and where media selection is at the discretion of user determined parameters by using a suite of International Standards based on ISO 21217 and ISO 21210, that provide a common platform for a number of standardized media using ITS-stations to provide wireless support for applications, such that the application is independent of any particular wireless medium