IHSDM: Driver/Vehicle Module
Vehicle Dynamics Model
Description
The Vehicle Dynamics Model will be used to simulate the operation
of a particular vehicle type on any roadway alignment. The Model
will estimate measures including lateral acceleration, friction
demand, and rolling moment, based on input from the IHSDM Driver
Performance Model, including steering, acceleration and braking.
 The
Vehicle Dynamics Analysis Non-Linear (VDANL) model developed by
Systems Technology Incorporated (STI) has been selected as the core
component for the IHSDM Vehicle Dynamics Model.
VDANL can simulate vehicle dynamics on roadway surfaces, including
superelevated horizontal curves and vertical curves. Model output
includes speed, lateral acceleration, roll angle, and lateral offset;
these all may be plotted by station.
See IHSDM Library for references:
"The Capability and Enhancement
of VDANL and TWOPAS for Analyzing Vehicle Performance on Upgrades
and Downgrades Within IHSDM," Report No. FHWA-RD-00-078,
August 2000.
Contact: Joe Bared at joe.bared@fhwa.dot.gov
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