Development and Application of a New Tool in Driver Task Analysis

A framework for task analysis is derived from a model of the drivers´ information processing.
The first step of the procedure is to divide a given driving task (e.g. left turning in a signalised intersection of a certain type) into subtasks (about 30 for the example). These subtasks are appointed to defined stretches of the road and the time structure of the subtasks is determined.
For each subtask an analysis format is used, that organizes different requirements into perception, expectation, judgement, memory, decision and driver action. In a next step, typical driver errors are appointed to the subtasks. Afterwards the information gathered in the analysis procedure is compressed to ratings of the complexity and risk included in each subtask. After the crucial subtasks of a driving task have been determined, a list of those requirements that led to that rating can be compiled. These lists give the potential for aiding the driver e.g. by use of driver assistance systems.

The paper explains the need for task analysis in the context of car driving and shortly reviews past approaches. Its main focus is on the presentation of the tool using an example and demonstrating applications in the context of new technology and car driving.

Aus: Herbert Gstalter & Wolfgang Fastenmeier: Abstract für EFPA Congress in Wien, 6.-11.8.2003

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