Overview
ISO/TR 24317:2023 - Intelligent transport systems - Mobility integration - Mobility integration needs for vulnerable users and light modes of transport - is a technical report from ISO/TC 204 that reviews existing standardization efforts and identifies gaps in support of travellers using active and light transport modes. The report focuses on cooperative intelligent transportation systems (C-ITS) and how they can support the “complete trip” (end-to-end multimodal journeys) for all users, including vulnerable road users (VRUs) and people with disabilities. Light mode conveyances covered include micromobility vehicles (e‑scooters), e‑bikes, power wheelchairs, motorcycles and mopeds.
Key technical topics and requirements
ISO/TR 24317 does not prescribe new mandatory specifications but summarizes technical areas and identifies where standardization is needed. Major topics include:
- VRU taxonomy and definitions - classifications for pedestrians, cyclists, micromobility users, powered two‑wheel vehicles (P2WVs) and related device profiles.
- C‑ITS processes for VRUs - detection, identification, right‑of‑way (RoW) compliance, expected manoeuvre prediction, and communication/notification flows.
- ITS-S architectures and role models - ITS station models (ITS‑S, V‑ITS‑S, P‑ITS‑S) and how VRU devices and nomadic devices fit into C‑ITS architectures.
- Communications and messaging - V2V, V2I, V2P and P2P interaction needs, including nomadic device integration and micromobility communication networks.
- Service packages and use cases - VRU-focused and infrastructure/vehicle‑focused use cases relevant to multimodal journey planning, safety alerts, and accessibility services.
- Gap analysis - areas where standards are lacking, especially to enhance safety, accessibility and end‑to‑end multimodal support for vulnerable users.
Practical applications
ISO/TR 24317 is intended to guide development, deployment and prioritization of standards and solutions that:
- Improve safety by enabling C‑ITS to detect and communicate with micromobility and vulnerable users.
- Support MaaS and multimodal trip planners that include active modes and assistive devices.
- Inform the design of ITS‑enabled infrastructure, notification/haptic interfaces, and nomadic apps used by VRUs.
- Help micromobility operators, municipalities and transport planners integrate shared devices into ITS ecosystems.
Who should use this report
- Transport authorities and city planners
- ITS and C‑ITS system architects and vendors
- Micromobility operators and vehicle OEMs
- Accessibility and inclusive mobility specialists
- Standards developers and researchers
Related standards
ISO/TR 24317 positions itself alongside other ITS and C‑ITS work produced under ISO/TC 204, serving as a roadmap for future standardization to better include VRUs and light modes across V2X ecosystems.
Keywords: ISO/TR 24317:2023, intelligent transport systems, mobility integration, vulnerable road users, micromobility, C‑ITS, VRU, MaaS, end‑to‑end multimodal.