Chapter 2: Task Analysis Procedure

CHAPTER 2. TASK ANALYSIS PROCEDURE

The task analysis undertaken in conjunction with Task E followed a relatively classical task analysis technique. Since a task analysis can be performed in a multitude of ways, the specific procedure used represented a compromise between utilizing specific techniques that might have been of greater value in the determination of specific human factors issues and the more readily acceptable techniques having a greater application to the range of issues that must be considered in this project. The approach used included the following:

Develop a hierarchical listing of tasks associated with driving and ATIS functions.
Develop descriptions of each task that characterize the task according to issues of potential importance to human factors design guidelines.
Identify and characterize the driving tasks of importance to use of ATIS.
Select from among all ATIS functions those that appear to be most representative of normal uses that will be made of ATIS.
Select scenarios that represent potential "real-world" use of the most significant ATIS functions.

HEIRARCHIAL TASK DESCRIPTION

OPERATIONAL SEQUENCE DIAGRAM (OSD)

TASK CHARACTERIZATION

DRIVING FUNCTIONS

FUNCTION SELECTION

SCENARIO SELECTION