FreeFlow Cost
Description
Travel time on a link segment for any mode is based on the free flow travel time, e.g. Length divided by speed This function looks like the following:
\(\Large \tau_{a,m} = {L_a \over \vartheta_{a,m}}\)
with
\(\tau_{a,m}= \textrm{travel time on link segment } a \textrm{ for mode } m,\\ \vartheta_{a,m} = \textrm{free flow speed on link } a \textrm{ for mode } m,\\ L_a = \textrm {length of link segment} a,\)
Defaults
This class has no defaults (yet)
Methods
This class has no methods (yet)
Properties
This class has no properties (yet)
Example 1
from planit import *
planit_instance = Planit()
planit_instance.project.set(TrafficAssignment.TRADITIONAL_STATIC)
# set physical cost to FREE FLOW
planit_instance.project.assignment.set(PhysicalCost.FREEFLOW)See also
Traffic assignment on assignments that support this physical cost implementation
PhysicalCost.<enum> for all available physical cost options
PhysicalCost landing page for all available physical cost implementations
Source code
Class FreeFlowCostWrapper in projectwrappers.py