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Continuous Regional Travel Behaviour Survey
Presented to: 16th TRB National Transportation Applications Conference May, 2017
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Background Main Database for studying travel behaviour
Relatively large (~2%) regional household travel diaries done about once every 5 years since 1985 Focus on a ‘typical day’ – fall, weekday Gaps in understanding regional travel behaviour Weekday vs. weekend Seasonality Weather effects independent from time of year
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Research Design Main Survey (cross-sectional) Panel Survey Car loggers
Two-day trip diary Survey over 15 months—Fall 2013 to Fall 2014—except Stat Holidays Random sample of households over 5 time periods (waves) Target of 5000 Households, 1000 per Wave Panel Survey Recruitment from Waves 1 and 2 of cross-sectional survey About 500 panel households Car loggers Loggers for up to two household vehicles Same two days of survey
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Results How Weekend Trips are Different?
Trip rates are lower Extended ‘peak period’ from late morning to late afternoon Saturday trip rates are higher than Sunday, but trip characteristics are similar Except – auto driver trips are substantially higher on Saturday What are the seasonality effects? Trip rates are highest in the fall and lowest in the summer Proportion of travel-to-work trips is consistent throughout the year School and pick-up/drop-off trips decline substantially in the summer Shopping, social/recreation and dining increase in the summer Mode shares are relatively consistent yearlong Exceptions are in the summer, Auto Driver – decrease, Bike - increase
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Lessons Learned Would we have done it again?
Yes, need some idea about travel behaviour outside of the regular travel survey Unclear how this factors into planning decisions What we would have done differently? Would have narrowed the scope of the study Cross-sectional vs. Panel – unclear if panel provides additional information Loggers – technical issues (e.g. cold starts, signal drops) that made it unusable
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Next Steps Econometric modelling
Account for socio-demographic, employment, prices, weather Analyze travel behaviour changes within households (panel)
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Thank you!
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