ISO 16844-4 is the fourth part of the ISO 16844 multi-series regarding tachograph systems in road vehicles.
ISO 16844-4 specifies the CAN-based data communication between the display unit and other devices connected to an SAE J1939-based in-vehicle network. The provided requirements and recommendations cover physical, data link, network, and application layers according to the OSI reference model.
Additionally, ISO 16844-4 specifies the parameter groups, which are supported.
ISO 16844-4 on tachograph systems in road vehicles is useful for:
The digital tachograph concept is based on recording equipment storing data, related to the activities of the various drivers driving the vehicle, on which it is installed. The display unit provides the driver and other individuals responsible for the vehicle with important information regarding the vehicle and the driver’s schedule.
ISO 16844-4 provides you with detailed guidance on integrating of controller area network physical layer, data link, transport layer, and application layer. These guidelines of ISO 16844-4 ensure your display unit communication interface for tachograph systems operates efficiently.
BS ISO 16844-4:2022 supersedes ISO 16844‑4:2013, which has been technically revised.
The main changes are as follows:
ISO 16844-4