Upgrading APC considering rail requirements
ITxPT launches new passenger counting specification for smarter and more flexible occupancy management.
S04P04 Logon: A common framework for Public Transport logon processes
ITxPT publishes S04P04-Logon specification, a common framework Logon processes in public transport
ITxPT releases Ticketing Validation Counting specifications
ITxPT publishes S04P07N01-Validation Counting, a new hardware-independent specification for ticketing validation data.
The MQTT-protocol based specifications went live on 01-April-2026!
The ITxPT collaborative community publishes new S04 technical specifications series supporting MQTT broker-based architectures
Current Chestnut Working Groups
Technical Working Groups continue the work on Data List, Batteries, Power management, Ticketing, MQTT broker...
MQTT-broker: the Proof of Concept
Invitation to Proof of Concept​ to Strategic and Principal members
Linden specification goes public
Access the latest version of the technical specifications published on 1 April 2025
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