Benefit of "Dynamic Use Cases" to Early Design and Driving Assistance System for Pedestrian/Truck Collision Avoidance.

Author(s)
Tattegrain, H. Bonnard, A. & Mathern, B.
Year
Abstract

The common approach to express Driving Assistance Systems (DAS) functionalities is often based on use cases that explain driving context and required assistance. However, DAS design requires temporal consideration of driving situation evolution when using the assistance, in order to define whenthe assistance is activated and which decision criteria is used. Driving situation complexity and its temporal progress cannot be easily appreciated without tools taking into account all actors (pedestrians, driver, vehicles) and assistance effects on the scenario evolution. This paper describes a software application that offers designers a light and simple way to early design, tune and test DAS functioning on progressing situations. This tool is developed in the VIVRE 2 project to support the early design of a DAS that warns truck drivers to avoid pedestrian collisions. In this context, the tool permits to test the DAS functioning by running "dynamic usecases" (static use cases enriched with additional inputs to reflect the temporal evolution). It allows the designer to build scenarios with specifics parameters about driver, truck, pedestrians and assistance. It also proposes replay and trace features that help the analysis of the "dynamic usecases" combination. These iterative tests and adjustments of DAS allow determining decision criteria that works in all targeted situations. To further efficient early design, the tool must stay light and easy to use. As aconsequence, the temporal evolution models of actors are kept simple. Once the DAS functioning is validated, another design phase in more realisticconditions is required; to make sure that no unanticipated behaviour occurs, which may reduce the functioning. This approach is crucial for early designing of a DAS to bring continuity to the use cases and to evaluate theconsequences of any decision criteria modification on the global functioning in order to ensure driver warning efficiency. The full text of this paper may be found at: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv21/09-0489.pdf For the covering abstract see ITRD E145407.

Publication

Library number
C 50115 (In: C 49887 CD-ROM) /91 / ITRD E145738
Source

In: Proceedings of the 21st International Technical Conference on Enhanced Safety of Vehicles ESV, Stuttgart, Germany, June 15-18, 2009, Pp.

Publication (link)

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