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Federal Highway Administration Research and Technology
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Publication Number: FHWA-HRT-08-019
Date: November 2007
Development of a Driver Vehicle Module (DVM) for the Interactive Highway Safety Design Model (IHSDM)
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SECTION 2. DESCRIPTION AND DEVELOPMENT OF THE DVM
This section describes the DVM design and development that has taken place throughout the course of the project. An overview of the five major functional components is also provided.
Purpose and Structure
Figure 1 outlines the information flow within the DVM. The Roadway Geometrics and Driver Geometrics components perform coordinate transformations of the roadway data and compute certain error variables (e.g., vehicle drift rate) that are to be corrected by the driver. The VDM responds to the driver's control input as well as to the gravitational inputs dictated by the roadway geometry to simulate the motion of the vehicle.
The purpose of the driver portion of the DVM is to simulate the driver's perceptual, cognitive, and control processes to generate steering, braking, and acceleration inputs. This module has five major functional components: (1) Perception, (2) Speed Decision, (3) Path Decision, (4) Speed Control, and (5) Path Control. These components are described below.
Figure 1 . Information flow in the Driver Vehicle Model.