Base data for simulation

The stochastic nature of traffic begs the necessity to provide this type of variability in Vissim models. The heart of Vissim, Wiedemann's car-following model, accounts for this by implementing parameters based on stochastic distribution (Operating principles of the car following model).

The base data for simulation includes the settings for the entire network and all basic objects for modeling vehicle and pedestrian movement, e.g. distributions, functions, and behavior parameters. Base data further contains types and classes. These allow you to group properties that are the same for many network objects, so that you need not set them for each individual object.

In addition to input and output attributes, you can define user-defined attributes for all network objects. User-defined attributes may be edited and managed in lists in the same way as predefined attributes.

For each attribute, you can specify an alternative name as an alias (Using aliases for attribute names).

Superordinate topic:

Basics

Information on editing:

Defining track properties

Defining levels

Defining link behavior types for links and connectors

Defining area behavior types

Defining boarding delay types

Related topics:

Selecting network settings

Using user-defined attributes

Using aliases for attribute names

Using 2D/3D models

Defining functions for acceleration, deceleration and speed

Using distributions

Managing vehicle types, vehicle classes and vehicle categories

Defining driving behavior parameter sets

Defining display types

Using time intervals

Toll pricing and defining managed lanes