EU: Contextual Speed Information Service - Wide Area Broadcast

Description:

This solution is used within Australia and the E.U.. It combines standards associated with EU: Contextual Speed Information Service with those for C-X: Wide Area Broadcast. The EU: Contextual Speed Information Service standards include upper-layer standards that support for providing speed information to a vehicle from roadside infrastructure. The C-X: Wide Area Broadcast standards include lower-layer standards that support one entity broadcasting information to all wireless devices over an area that covers at least a metropolitan area without any expectation of acknowledgement or response; security is provided by the upper-layers.

Relevant Regions:

• Australia
• European Union

Comm Profile: C-X: Wide Area Broadcast

Comm Class: WAN - Wide Area Network

Level	Standard
Access	WAW Broadcast Alternatives
Mgmt	Proprietary
Security	Proprietary
TransNet	Proprietary

Data Profile: EU: Contextual Speed Information Service

Level	Standard
Facilities	ISO 14823 TTI Graphic DD
ITS Application Entity	ISO 17426 Contextual Speeds
ITS Application Entity	ISO 19321 IVI Data Dictionary

Solution Issues Severity: 4

Solution Issues:

Default	Severity	Name	Type	Description
True	Low	Ubiquitous broadcast technology	SubNet Gap	With the continual enhancement of broadcast technologies and a mixture of free and subscriber-based systems, it is difficult to identify any single technology that can be used to reliably reach the bulk of drivers in a timely manner.
True	Medium	Still under development	Standardization Gap	A draft of the standard has been developed by the working group, but it was still under development at the time this analysis was performed.

Solution to Triples

Source	Flow	Destination
Transportation Information Center	speed management information	Vehicle