Demand in InfraWorks Mobility Simulation

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Mobility Simulation is an integrated multimodal mobility simulation engine for InfraWorks.

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When using Mobility Simulation to create animated simulations of pedestrian movement, you need to apply demand.

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The demand is the number of people that want to travel, and the network of roads and pathways is the supply for this demand.

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If demand is larger than supply, then there will be congestion.

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With two walkways and two areas defined already in InfraWorks Mobility Simulation, and parameters configured, you can apply demand.

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From the toolbar, expand Demand and for this example, select Demands.

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This opens the Demand Editor dialog.

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This dialog features a few tabs for adjusting Directed Demand, Undirected Demand, and Transport Demand.

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Directed demand defines a number of trips, with each trip having an explicit origin and destination.

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Directed demand can be used for Person-Trips or Vehicle-Trips.

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Undirected demand defines a number of trips from each origin, but no explicit destination.

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From the Directed Demand Tab, click Add (+).

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The New Matrix dialog displays.

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Here, you can set up a new directed demand matrix.

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However, for now, leave the settings as they are and click OK.

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Back in the Demand Editor, a new matrix appears, which you can use to send people from one place to another.

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Move the dialog, if needed, so that you can see the walkway in the model.

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From column 1 or column 2, click a cell in the matrix.

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Notice in the project window, an arrow towards one of the defined areas highlights, indicating the direction of the demand in that cell.

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To direct demand—in this case, 100 people—from area 2 to area 1, in the first cell of column 2, enter “100”.

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Click OK.

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Applying directed demand for pedestrians in InfraWorks Mobility Simulation is a simple way to get a simulation up and running.