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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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slide1
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

slide2
OutlineProvide an Overview
  • Introduction
    • Motivations
    • Background
  • Weekend Travel Characteristics
    • Times
    • Generation, Modes
    • Purposes
  • Model Form
  • Conclusions
slide3
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
slide9
Introduction;Background
  • Have weekday travel model
    • aggregate, equilibrium approach
    • 25 segments
    • nested logit choice structure
    • EMME/2-based
    • consumer benefits for travellers
slide12
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
slide13
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?
slide17
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
slide21
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
slide25
Weekend Travel Characteristics;Home to Shopping Purposes
  • Generation much greater on weekends
  • Mode split on weekends:
    • less auto driver and transit
    • more auto passenger
slide29
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
slide33
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
slide36
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)
slide40
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
slide47
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
slide48
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
slide50
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
slide52
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
slide53
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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