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New in Dynasim 4

New Flow Scenarios

Now Five ways to specify travel demand:
Generator
  • The standard method in Cube Dynasim, where travel demand is quantified with a set of origin-destination matrices by vehicle class and time segment.
Sub-Network
  • Allows you to simulate a sub-area, extracting flows from the trip matrix of the whole network. It provides a useful way to analyze how a sub-area (e.g. an intersection) functions without running the entire simulation.
Export-Import
  • Associates Cube Dynasim with Cube Voyager.  You can import all or part of an assignment (paths and flows) from Cube Voyager to Cube Dynasim to carry out a microsimulation of the network. The network generated by Dynasim can also be used in Voyager.
Estimation
  • One of the most interesting new features of Cube Dynasim 4!  Cube Dynasim calculates and assigns traffic flows so that they match traffic counts and their tolerances. The results of the estimation are saved in shape files for further analyses.
Re-Assignment
  • The demand is based on the results of an estimation scenario, assigning flows estimated on network 1 to network 2. An important use for this method is evaluating traffic transfers resulting from changes to the road network.
 

Parking Simulation

Cube Dynasim 4 adds a new powerful tool to simulate parking, from very simple to extremely large lots.

Parking lots are grouped in “Zones”. Reaching a zone, each vehicle will try to find a parking space, seeking to optimize it’s final location based on the position of parking “attractors” and walking distance. In case a vehicle does not find an available parking space, it will continue looking for a parking space or it will move to a new zone to look for a new parking space. It is possible to specify a “visibility” parameter for each alley and simulate the impact of VMS indicating the occupation rate of the parking lots.

Accident Simulation

Cube Dynasim has a specific tool to simulate accidents and their impact on the network. Accident duration (start time/end time) and affected vehicle type(s) may be specified.

 

 

VMS – Variable Message Signs

Cube Dynasim has a specific tool to simulate variable message signs and analyze their impact on the simulated network. It is possible to define different reactions to events.  Cube Dynasim will reroute vehicles affected by the information.  It is a fundamental tool for evaluation of ITS alternatives.

 

Integration with UTOPIA

Cube Dynasim 4 now has an interface for communication with the signal optimization system UTOPIA. This function makes it possible to validate the scheduling of a controller or a real-time centralized system while avoiding the complications and cost inherent in on-site experiments.

 

 

New Outputs

Shape Files
  • Associate any data with the network trajectories and to export the Dynasim network as shape files (links and nodes).  Simulation results can be added to the shape files making it possible to create static maps of the dynamic simulation.
Flow Box
  • Turning volumes and link flows by vehicle type by area may be saved as EPS files for importing to documents.

Videos
  • In addition to DynasimViews, AVI files of the simulations may also be saved.

 

“Terminal” tool for PT simulation

Cube Dynasim 4 now allows public transport services to turn-around and restart their return trip.

 

 

 

Other specific tools

Several new tools have been added to Cube Dynasim 4 adding more techniques for simulating vehicle traffic and driving behavior.