Overview
ISO 24101-1:2008 - Intelligent transport systems (ITS) - Communications Access for Land Mobiles (CALM) - Application management, Part 1: General requirements - defines standardized structures and methods to install, uninstall and update applications on on‑board equipment (OBE) and wireless access equipment (WAE) in a CALM network. The standard ensures these lifecycle operations are performed in a reliable and secure manner so ITS services and vehicle applications remain interoperable across vendors and air interfaces.
Key topics and technical requirements
- Application Management Entity (AME): resident software in OBE/WAE that controls installation, modification and removal of applications, enforces state checks (e.g., not modifying running apps) and manages secure transfer.
- Application Management Table (AMT): stores management metadata (application name, version, install/modify timestamps, file size, access control info, available resources, device model/serial).
- Authentication and certificates: mutual authentication between operator, installer and device; use of manager certificates to authenticate application managers before granting AME access.
- Installer and download methods: supports OBE/WAE‑initiated (D-1) and installer‑initiated (D-2) downloads; Annexes A–C describe download flows including DSRC (Dedicated Short Range Communication).
- Secure transfer & verification: file transfer, application verification, archival records, restoration functions and procedures to ensure integrity and successful deployment.
- Access control & file management: rules for common files shared across applications, operator authentication, and API environment for application interfaces.
- Operational management: scheduled updates, transfer/interaction with CALM System Management Entity (CME), and test equipment provisions for verification.
Practical applications and who uses this standard
ISO 24101-1 is practical for organizations involved in ITS software lifecycle and deployment:
- Vehicle OEMs and telematics platform providers - to manage remote updates for infotainment, telematics and safety services.
- ITS service providers and fleet operators - to securely rollout and maintain service applications across mixed vehicle fleets.
- Infrastructure and WAE operators - for managing fixed roadside equipment and V2I application updates.
- Software vendors and integrators - to implement compliant installers, APIs and AME/AMT functionality.
- Test labs and certification bodies - to validate installation/uninstallation and update procedures (see Part 2: Conformance test).
Benefits include standardized, interoperable update workflows, improved security for over‑the‑air deployments, and reduced fragmentation across CALM air interfaces (cellular, DSRC, millimeter wave, etc.).
Related standards
Keywords: ISO 24101-1, CALM, application management, OBE, WAE, AME, AMT, installer, secure update, ITS, DSRC, vehicle software updates.