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VISSIM 5.30-05 User Manual

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5 Base Data for Simulation<br />

The stochastic nature of traffic implies the necessity to provide this kind of<br />

variability in <strong>VISSIM</strong> models also. The heart of <strong>VISSIM</strong>, the car following<br />

model of Wiedemann (cf. section 1.2), deals with this fact by incorporating<br />

several parameters that use stochastic distributions. This chapter deals with<br />

the base information for the traffic simulation by explaining the different type<br />

of distributions and functions, and also the way vehicles or pedestrians are<br />

modeled. If you would only like to use the <strong>VISSIM</strong> test functionality then you<br />

do not need to read this chapter.<br />

<strong>User</strong> <strong>Manual</strong> © PTV AG 2011 1<strong>05</strong>

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