Intersection Geometry Message
A V2X message encoding intersection lanes, approaches, connections, and reference geometry.
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The problem
Why MAP exists
This section requires approved editorial content.
No substitute explanation has been generated for why Intersection Geometry Message exists.
Operating model
How MAP works
The approved explanation should connect physical systems, communications, data, security, and operating responsibility.
The Intersection Geometry Message, commonly called MAP, describes the physical and logical layout of an intersection or roadway segment. Applications combine it with SPaT and precise positioning to associate a vehicle with a lane and interpret permitted signal movements. MAP data must be accurately surveyed, maintained, and aligned with the deployed coordinate reference.
Documented activity
Real-world applications
Examples come from verified deployment relationships rather than template-generated use cases.
Application 01
Ipswich Connected Vehicle Pilot
Australia's largest C-ITS field operational test connected 355 participant vehicles with 29 roadside stations across Ipswich.
Example: Completed · City
Knowledge database
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Technology map
Related technologies
These records share a documented category. Their placement does not imply technical dependency or compatibility.
This section requires approved editorial content.
No substitute explanation has been generated for related technologies.
Evidence and relationships
Supporting database
Structured records connected to this technology through reviewed Directus relationships.
Projects
Deployments
Completed · City
Australia's largest C-ITS field operational test connected 355 participant vehicles with 29 roadside stations across Ipswich.
Interoperability
Standards
ETSI TS 103 301
ETSI TS 103 301 defines infrastructure-originated C-ITS messages including signal, map, and request/status exchanges. It matters to V2X because it gives independently developed systems a common technical contract.
J2735
Defines message sets and data elements used for dedicated short-range and connected-vehicle communications, including safety and mobility messages.
Institutions
Organizations
standards_development_organization
Standards development organization publishing widely used automotive and V2X message, security, and communications standards.
Geography