TU Braunschweig


Hosse, R. S.; Sikatzki, S.; Schnieder, E.; Bandelow, N.:
Increasing Systems-Safety by Meliorating Policy-Processes under Conditions of Ambiguity Analyzing Interdisciplinary Ascendancies of the German Traffic System by Using Cybernetic Hazard Analyzing Methodologies .
ICEME 2012 - The 3rd International Conference on Engineering and Meta-Engineering , Orlando, Florida, USA, März 2012.


This paper shows the results of incorporating the MSP (multiple streams perspective) into the cyberneticbased hazard analyzing methodology STAMP (systemstheoretic accident modeling and process) to improve the developmentprocess of policies within sociotechnical systems. Understanding policy processes is seen as crucial in improving safetycompliance of policies and thus increase system’s safety. MSP illustrates several obstructions to safetycompliant policy making e.g. due to unclear preferences, time restrictions or manipulation. In contrast the application of cyberneticbased analyzing methodologies shows significant improvement in increasing systems’ safety, because it generates a deeper understanding of hidden processes and feedbackloops within sociotechnical systems. STAMP models control struc tures of systems’ resources, showing the cascaded relationships between interdisciplinary control components, e.g. market actors and policy entrepreneurs. This paper initially focuses on the description of sociotechnical systems, MSP and STAMP. Afterwards it focalizes the analogy between MSP and STAMP and subsequently generates a hybrid methodology incorporating MSP into the system’s control structure modeled by STAMP. Furthermore the explanatory power of STAMPMSP is exem plified by analyzing the German traffic system. Keywords: STAMP, Policy Process, Hazard Analysis, Multiple Streams Perspective, Control Structures, Ambiguity