Characteristics of Weekend Travel
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Characteristics of Weekend Travel in the City of Calgary: Towards a Model of Weekend Travel Demand. JD Hunt, University of Calgary DM Atkins, City of Calgary 17 th Annual EMME/2 User Conference Calgary AB, Canada October 2003. Outline Provide an Overview. Introduction Motivations

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Characteristics of Weekend Travel

in the City of Calgary:

Towards a Model of

Weekend Travel Demand

JD Hunt, University of Calgary

DM Atkins, City of Calgary

17th Annual EMME/2 User Conference

Calgary AB, Canada

October 2003


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OutlineProvide an Overview

  • Introduction

    • Motivations

    • Background

  • Weekend Travel Characteristics

    • Times

    • Generation, Modes

    • Purposes

  • Model Form

  • Conclusions


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Introduction;Motivations

  • Need weekend coverage for complete coverage

    • total benefits

    • total emissions

  • Acknowledge travel patterns different from weekdays

  • Identify present and future conditions for weekend

    • some congestion on Saturdays in particular

  • Develop transport policy for weekend

    • infrastructure development

    • transit service design





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Introduction;Background

  • Have weekday travel model

    • aggregate, equilibrium approach

    • 25 segments

    • nested logit choice structure

    • EMME/2-based

    • consumer benefits for travellers


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Introduction;Background

  • Have observations of travel behaviour on weekends

    • part of Household Activity Survey (HAS)

    • 8,400 households in total

    • 2,200 households concerning weekend travel

    • all trips over 100m

  • Developing weekday commercial movements model

  • Seeking to be consistent in treatment of weekends

  • develop spec for weekend model


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Weekend Travel Characteristics;Weekday vs Saturday vs Sunday

  • Excluding holiday periods

  • At 13 permanent count stations combined

    • Saturday traffic volume 78% of AAWT

    • Sunday traffic volume 64% of AAWT

  • Saturday and Sunday patterns over day very similar

  • Consider a single typical weekend day in model?


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Weekend Travel Characteristics;Home to Work Purposes

  • Generation much lower on weekends

  • Mode split on weekends:

    • less transit and P+R

    • more auto passenger and walk


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Weekend Travel Characteristics;Home to School Purposes

  • Generation much lower on weekends

  • Mode split on weekends:

    • Saturday and Sunday different

      • Saturday:

        • less transit, school bus, P+R and auto passenger

        • more auto driver, walk and cycle

      • Sunday:

        • less auto passenger and walk

        • no cycle, P+R and school bus

        • more auto driver and transit


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Weekend Travel Characteristics;Home to Shopping Purposes

  • Generation much greater on weekends

  • Mode split on weekends:

    • less auto driver and transit

    • more auto passenger


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Weekend Travel Characteristics;Home to Other Purposes

  • ‘Other’ excludes work, school and shopping

  • Generation somewhat greater on weekends

  • Mode split on weekends:

    • less auto driver and transit

    • more auto passenger


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Weekend Travel Characteristics;Home to Other Purposes

  • 2 basic kinds of ‘Other’

    • Other-1 attracted to retail employment

    • Other-2 attracted to population

  • Other-1 includes:

    • shopping

    • eating out

    • entertainment / leisure

    • medical / financial

  • Other-2 includes:

    • school

    • religious / civic

    • exercise

    • social



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Social Activity

Locations


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Weekend Travel Characteristics;Non-Home-Based Trips

  • Generation on weekends:

    • bit more on Saturdays

    • bit less on Sundays

  • Mode split on weekends:

    • highly dominated by auto throughout

    • less walking (fewer weekday work lunch-time trips)


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Weekend Travel Characteristics;Activities

  • Shift on weekends:

    • away from work and school

    • to leisure, shopping and other activities

  • Less regular on weekends – less transit

  • More family groups on weekends – more auto passenger

  • About as much time spent travelling on Saturday as

  • a weekday, bit less on Sunday


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Model FormConsistency with Weekday Model

  • Aggregate, equilibrium approach

  • Range of segments – about 25 or so

  • Nested logit choice structure for each segment

  • EMME/2-based


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Model FormSegments

  • Separate person types based on

    • transit fares

    • driving opportunities

    • equity considerations

  • Separate purposes based on

    • regularity

    • compulsory / discretionary

    • behaviour

  • Combine ‘Adult Worker’, ‘Adult Worker need car at work’,

  • and ‘Adult Other’ categories used in weekday model

    • work distinction less important as work less prevalent

    • mode choice dominated by auto


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    Model FormTimes of Day

    • Represent peak and off-peak conditions

    • Several options

      • one peak: 12:00-16:00

      • peak spreading: 2 shoulders either side

      • along with peak

  • Expect greater elasticity in time of day choice

    • less compulsory in time

  • Still undecided, need to trade-off between

    • representation of conditions near large retail areas

    • number of time periods


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    Conclusions

    • Travel behaviour different on weekends

      • appropriate to have different model

    • One day for Saturday and Sunday combined

      • not as accurate

      • not more complex than weekday model

    • Segmentation:

      • 2 Categories of ‘Other’ Purposes

        • based on attractors at destination end

      • 1 Category of Adult Person Type

        • reduced role of work and need car at work


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    Conclusions

    • Exciting times

      • ‘unknown territory’, still lots of questions

      • a way ahead

      • much more comprehensive modelling provided

    • Look forward to reporting in future


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