The New Cube Dynasim: New Features and an Example of Simulation of Parking Lots

The New Cube Dynasim:New Features and Examples of

Simulation of Parking LotsAlberto Brignone - Citilabs

• Scenario-based Simulation System

• Total control of all the modeling parameters and simulation details

• Analysis of Multiple Runs

• Export to “Dynasim Views”

Cube Dynasim – basic concepts

DynasimMicroscopicModel

DynamicModel

Event-drivenModel

StochasticModel

Cube Dynasim – basic concepts

Cube Dynasim has a “Scenario based” architecture

Simulation Scenario

Network Module

Flow Module

Signal Module

PT Module

Layer

Layer

Network Module

• It’s now possible to associate any type of information to the trajectories traffic counts, road name, road type, Tolls…)

New in Dynasim 4: Network Module

• Dynasim now allows to simulate accidents and their impact on traffic.

• It’s possible to associate the new “incident object” to any trajectory, specifying duration (start time/end time) and affected vehicle type(s).


• Dynasim now allows to simulate the impact and effectiveness of Variable Message Signs (VMS)

• It’s possible to define different reactions to events

• Dynasim will reroute the vehicles “affected” by the information

• Fundamental tool for the evaluation of ITS alternatives


Flow Module

• Demand is defined by vehicle type

• Dynasim offers a set of vehicle categories

• User can define own vehicle categories, defining:• Type• Motion• Dimensions• 2D and 3D features• Cinematic and Dynamic parameters

(Acceleration, deceleration, reaction time, …)

Flow Module

• The «Standard» Dynasim approach, where the demand is quantified by an ordered set of origin-destination matrices

• Origin-destination matrixes are defined in accordance with all OD type vehicle categories

• Dynasim allows to import/export set of tables

Flow Module – Generator

• New in Dynasim 4

• A new feature, extremely useful for analyzing how an intersection works by reducing the calculation times.

• This method does not consider the interactions with the global network's elements, which are outside the Subnetwork.

New in Dynasim 4: Flow Module – Subnetwork

• New in Dynasim 4

• The purpose of the Export/Import scenario is to associate Dynasim with Cube Base and Voyager and to import all or part of the assignment results to carry out a micro-simulation of the network

• The network generated by Dynasim can be used in Cube. The paths computed in Cube can then become input to Dynasim

New in Dynasim 4: Flow Module – Export/Import

• New in Dynasim 4 – One of the most interesting new features!

• The estimation scenario calculates and assigns traffic flows so that they comply with the constraints associated with:• traffic counts • Tolerances

• It is possible to use traffic counts:• section traffic count• directional traffic count

New in Dynasim 4: Flow Module – Estimation

• User has total control of the signals

• It is possible to model any signal plan:• Fixed cycle• Actuated cycle• Ramp Metering

• It is possible to model• Classic — European signals.• Ring-Based — U.S. signals.• Socket — Signals controlled by an

application external to Cube Dynasim.

Signal Module

• Integration with the UTOPIA system (developed by MIZAR/Swarco)

• UTOPIA is an adaptive traffic control system designed to optimize flows and give selective priority to public transport without sacrificing travel times for private traffic.

New in Dynasim 4: Signal Module

• It is possible to simulate any Public Transport system.

• Public Transport properties:• Frequency• Time table

• Detailed Transit Stop

PT Module

• In Dynasim 4 it is now possible to simulate stop to stop matrices of a PT system . Dynasim will automatically compute the dwell time and stop time, based on :• Boarding• Alighting • Demand on the platform

• This allows to simulate the impact of different layouts of PT systems: • Impact of the position of access/egress doors • Double/single doors

• Ideal to simulate • Tramways• Subways• Trains

New in Dynasim 4: PT Module

New in Dynasim 4: PT Module

Parking Simulation in Dynasim

• Recent feature of Dynasim (add on to the Dynasim Pro version):

• It makes possible to describe from very simple to extremely big parking areas

• Models with up to 6000 parking places have already been developed with Cube Dynasim


• Reaching the envelope, each vehicle will try to find a parking space

• It’s possible to associate “Parking Attractors” to the different “Parking Envelopes”

• Vehicles entering the “Parking Envelopes” will try to optimize the final location based on :• the location of the “Parking

Attractors” • Minimization of the walking distance


• In case a vehicle does not find an available parking space:• It will turn around the envelope and continue looking for a parking space• It will choose a new envelope, that means reach this new envelope and then look

for a new parking space.

• It is possible to specify a “visibility” parameter, for each alley


• Parking areas can be “preloaded”, so to be able to simulate, for instance, a PM peak hour considering the real occupancy at the beginning of the simulation

• It is possible to specify, for each “parking envelope”, minimum/maximum/average parking time

• It is possible to simulate Multi Storey Car Parks:• specify rules about their attractiveness • the way the different levels are used.



• Possible Applications:• Shopping Centers• Airports• Sports Arena• Campus• Hospitals• …




Some real examples…

Dynasim 4 – Output and statistics

• Dynasim can automatically run a simulation scenario with multiple times, using a different seed value for each run

• Collected Data are specified by• CRITERIA • STATISTICS


Criteria

Independent of the network

Referred to a pointEntry - Exit

Green Duration

Time to start

Flow

Lack

Number

Delay

Stop

Stop per Vehicle

Stop duration

Travel Time

Travel Speed

Flow per Lane

Queue

Inter-Time

Occupancy

Instant Speed


Statistical Analysis

Actual

Cumulative

Minimum

Mean

Maximum

Standard Deviation

Quartile

Confidence Interval Bound

All


“TIME” TABLEDescription Criterion Statistic Unit

1. Data Collector Name2. Mean Travel Time Travel Time Mean Seconds3. Minimum Travel Time Travel Time Minimum Seconds4. Maximum Travel Time Travel Time Maximum Seconds5. Travel Time (St. Dev.) Travel Time Standard Dev. Seconds6. Travel Time (Quartile 10) Travel Time Quartile 10 Seconds7. Travel Time (Quartile 90) Travel Time Quartile 90 Seconds

• Cube Dynasim generates tables about main results of simulation:• “LOS” Table• “Inter Time” Table• “Time/Speed” Table

Dynasim 4 – Output Data, CSV Files

• The results of the simulation are stored in a database (Dynasim.db file)

• This is an SQL database

• Using a specific driver it is possible to establish a connection between SQL database and any other applications (Excel/Access)

Dynasim 4 – Output Data, Statistics Database

Data stored in tables

• Dynasim 4 allows to export statistics results as shape files, so to create «static maps» of the Dynamic simulation

New in Dynasim 4: save as shape files

• Dynasim allows to define some areas where to record, for each simulation:• Turning volumes• Flows on links• Per vehicle type

• Dynasim creates, for each simulation, different EPS files that can be imported in reports, such as in Microsoft Word.

New in Dynasim 4: the “Flow Box”

• Simulation animations and data may be exported to a DynaViews EXE file (Exported simulations may be freely distributed).• Play animations at any speed.• Zoom, pan, and navigate within the animations.

• Simulation animations can be recorded “on the fly” to AVI files (2D views and 3D views). Zoom, pan, and navigate while recording the videos.

Dynasim 4 – Animations and videos

Thank you!

Alberto Brignone - Citilabs

Documents

The New Cube Dynasim: New Features and an Example of Simulation of Parking Lots