Safety analysis on typical scenarios of GTCS based on STAMP and STPA

Abstract

As the rapid development of the urbanization, solutions to solving the traffic congestion have become a hotspot. In this case, the Guided Transportation System (GTS) has been developed, which has the potential to release the traffic jam due to the advantages of short construction period and low cost. Safety analysis on the new transportation tool is essential to keep its operation and passengers safe. Based on the STAMP (Systems-theoretic Accident Modeling and Processes) model and the STPA method (System-theory Process Analysis), this paper constructs a safety analysis framework for the typical operating scenarios of the Guided Transportation Control System (GTCS). Aimed at typical scenarios of vehicle tracking, the corresponding hierarchical control structure models are established. Then, the hazard causes are analyzed. And corresponding safety constraints are put forward to handle the hazard causes, which can provide supports for improving the system design of the GTCS.