Overview
ISO/TS 5255-1:2022 - "Intelligent transport systems - Low-speed automated driving system (LSADS) service - Part 1: Role and functional model" defines a common service-level role and functional model for deploying low‑speed automated driving system (LSADS) services in urban and rural areas. The technical specification focuses on service applications and supporting infrastructure (e.g., operation management platforms, emergency response and driving monitoring platforms, user booking/payment platforms) and intentionally excludes in‑vehicle control systems. It is intended as a baseline reference to support emerging LSADS business models and infrastructure design.
Key topics and technical requirements
- Role and functional model definition: baseline models for application, operational and physical layers that describe roles, responsibilities and interactions among system actors.
- Service classification and evolution: a suggested AD service classification and discussion of service evolution, noting many current LSADS deployments align with SAE ODD levels L3 and L4.
- Infrastructure support (ISAD): definitions and examples of infrastructure facilities and road furniture that support LSADS services, including different infrastructure support levels (see informative annex).
- Operational physical layer: actors and data-flow models covering LSADS control centres, service vehicles, transport providers, vehicle owners, inspection/certification authorities, traffic management centres, SCMS (security credential management system), first responders and ISAD.
- Booking & payment layer: functional roles and data flows for user booking, online reservations, payments, central account systems, banking and payment media owners.
- Concept of operations (CONOPS): goals, operational processes, policies, certification authority appointment and practical operational constraints.
- Normative references: links to related ISO work such as ISO/TR 4445 (role model of ITS in smart cities) and ISO/TS 14812 (vocabulary).
Practical applications
ISO/TS 5255-1 is practical for planning, specifying and integrating LSADS services where vehicles operate at low speeds for passenger or goods movement. Typical applications:
- Design of urban/rural LSADS pilot projects and service rollouts
- Specification of infrastructure requirements for automated shuttles and microtransit
- Architecture for service platforms (booking, operations, emergency response)
- Defining data‑flows, certification processes and actor roles for safe operations
Who should use this standard
- Municipal and regional transport authorities and regulators
- ITS architects and system integrators
- LSADS service providers and transport operators
- Infrastructure planners and road authorities (ISAD design)
- Payment platform and mobility service vendors
- Certification bodies and first‑responder planners
Related standards
ISO/TS 5255-1:2022 is a service‑level blueprint helping stakeholders define interoperable, secure and certifiable LSADS services and supporting infrastructure for safe, scalable low‑speed automated mobility.