Software Architecture of a safety-related Actuator in Traffic Management Systems

Thomas Novak, Christoph Stögerer

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review


Traffic Management Systems are used in traffic technology for propagating information from a Higher Order Control Unit to the traffic participant. In today’s systems the user interface to the traffic participant is provided by actuators like Variable Message Signs. Such information can be either non-safety-critical (e.g., traffic jams warning) or safety-critical (e.g., green arrow opening the emergency lane on the motorway). According to international and national standards, software of Variable Message Signs displaying safety-critical information has to meet distinct safety requirements.

This paper presents a general architecture of safety-related software in an actuator according to the product standard VDE 0832. It gives an introduction to the standard and the domain of traffic control. A hazard analysis is carried out and safety measures are derived. Afterwards, the corresponding software architecture is presented. Finally, a safety assessment is carried out to prove the concept.
Original languageEnglish
Title of host publicationComputer Safety, Reliability, and Security
Subtitle of host publicationProceedings of the 31st International Conference, SAFECOMP 2012
EditorsFrank Ortmeier, Peter Daniel
PublisherSpringer-Verlag GmbH
ISBN (Electronic)978-3-642-33678-2
ISBN (Print)978-3-642-33677-5
Publication statusPublished - 2012
Externally publishedYes

Publication series

NameLecture Notes in Computer Science
PublisherSpringer Verlag
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


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