AITPM National ConferenceBrisbane29 – 31 July 2015AITPM Western AustraliaPerth20th August 2015

Strategic to Simulation - A Pedestrian Perspective

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Outline of Presentation

• The current approach• Approach taken in other transport modes• Background to the PPM and why it was needed• Applications of and simulation modelling exercises from the

PPM• Learnings and enhancements to the PPM including interfaces

with other models

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The Current Approach to Pedestrian Modelling

• Focused on bespoke demand development external to the model process

• Demand development based on observed pedestrian data within input from scheduling/timetabling. Some linkages to real time models for arrival/departure profiles

• Generally may not cover the entire pedestrian trip to another transport mode

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Approach in other Transport Modes

• Road based transport the most progressed approach to transport modelling

• Public Transport can adopt a similar approach

Strategic Model

• Land Use, Macro network inputs• Outputs: Choice of Modes, Distribution

Mesoscopic Model

• Detailed Intersection inputs• Outputs: Detailed Local Route Choice

Simulation Model

• Detail road network geometry and elements• Outputs: Individual vehicle operation/interaction

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Background to the Perth CBD and PPM

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Background to the Perth CBD and PPM

Development Area

Hotels Retail (sqm)

Office (sqm)

Dwellings (no.)

Proportion of 2015 CBD

Perth Citylink 1 24,000 220,000 1,650 33% increase in existing residential

Elizabeth Quay

1 20,203 76,083 1,033 20% increase in existing residential

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Background to the Perth CBD and PPM

• Three Step Model – Generation, Distribution and “Strategic” Assignment

• Emme network and macro framework• Fruin adapted speed flow function

focus on width of path being the key capacity constraint

• Assignment using two user classes• Signalised intersection delay modelled

at strategic level

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Background to the Perth CBD and PPM

• Land use inputs for floor area and car parking (public). These can be aligned with other strategic models (eg STEM)

• Public transport inputs – Rail services on platform basis, CAT services, major bus stations. Light rail in the future

• Pedestrian networks including permeability through buildings• Light Rail and CAT services updated – Light Rail based on a

number of alignments

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Applications of and simulation modelling exercises from the PPM• Perth CityLink and Station

Access• Extending to include the

Esplanade Station• Perth Arena modelling• Informing Perth Parking Policy• Perth Busport (S)• Long Term Perth Station

Planning• Future - Transit Mall Planning

(S)?

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Learnings and enhancements to the PPM including interfaces with other models• Data!- OD data of pedestrian trips- Allow more comprehensive validation

• Speed flow and generalised cost in the PPM- Amenity factors- Representation of delay at road crossings- Attractiveness of vertical transitions

• Interaction with other modal models – (city wide 4 step models)- Is there a need for consistency?- Integration with other modal models for inputs?

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Learnings and enhancements to the PPM including interfaces with other models• Route choice differences macro and micro considering the detail

of simulation- Positioning of cordon locations

• Understanding and replicating capacity constraints such as fare gates and open spaces (eg malls)

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Questions and commentary?