ISO 18561-1:2020

Overview - ISO 18561-1:2020 (ITS for urban mobility via nomadic device)

ISO 18561-1:2020 defines general requirements for data exchange between ITS stations to support urban mobility applications delivered via nomadic devices (smartphones, tablets and other personal devices). The standard frames an integrated mobility-information platform-as-a-service that connects personal ITS stations (nomadic devices) with vehicle, roadside and central ITS stations to enable eco‑mobility and green transport management. It aligns mobile apps and transport planning workflows with measures of effectiveness such as time, cost and eco‑effectiveness.

Key topics and technical requirements

• Data exchange architecture: general requirements for information flows between personal, vehicle, roadside and central ITS stations (nomadic device = personal ITS station).
• Use case clusters: definitions and structure for four families of urban mobility use cases:
  • Trip generation (production/attraction data)
  • Network/trip assignment (route and network modelling)
  • Mode assignment (modal split / modal choice)
  • Guidance and analysis (user guidance, planning analytics)
• Mobility data elements: support for origin–destination (OD) matrices, trip production/attraction collection, and modal choice indicators based on time, cost and eco‑effectiveness.
• Integration model: guidelines to integrate multiple transport modes and existing mobile apps into a unified mobility information platform (mobility-as-a-service approach).
• Terminology and interfaces: standardized terms (nomadic device, P‑ITS‑S, R‑ITS‑S, central ITS station, green ITS, eco‑mobility) and requirements for interoperable interfaces and data sharing to support planning and operational services.

Practical applications and target users

Who benefits:

• Urban and regional transport planners using real‑world trip data to improve modelling and OD matrices.
• ITS solution architects and system integrators designing interfaces between mobile apps, vehicles, roadside units and central management systems.
• Mobile app developers and MaaS providers integrating eco‑mobility guidance and multimodal trip planning.
• Municipalities and mobility service operators implementing green transport policies (carbon zones, EV support, shared mobility).
• Vehicle OEMs and roadside infrastructure providers collaborating on data exchange for safety, routing and sustainability services.

Practical use cases:

• Collecting anonymized trip generation and attraction data from smartphone apps for planning.
• Delivering personalized route and modal recommendations optimized for time, cost and eco‑impact.
• Enabling central ITS stations to aggregate nomadic device data for network assignment and policy evaluation.

Related standards

• ISO 18561 series - Part 1 (this document).
• ISO 18561-2 (trip and modal choice applications and specification) - technical requirements for trip/modal apps.
• ISO 18561-3 (mobility integration service applications using hybrid V2X) - mobility-as-a-service and hybrid V2X use cases.

Keywords: Intelligent transport systems, ITS, urban mobility, nomadic device, personal ITS station, green transport management, eco‑mobility, mobility-as-a-service, OD matrix, modal choice, trip generation.