New Methods and Technologies for complex activity diary surveys - The SIMPT experience
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New Methods and Technologies for complex activity diary surveys - The SIMPT experience. B e rnhard Fell, Thomas Haupt, Uwe Reiter Budapest, 27.4.2006. PTV travel surveys at a glance. 15 years experience in planning, conducting and analysing travel surveys

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New Methods and Technologies for complex activity diary surveys - The SIMPT experience

Bernhard Fell, Thomas Haupt, Uwe Reiter

Budapest, 27.4.2006


PTV travel surveys at a glance surveys - The SIMPT experience

  • 15 years experience in planning, conducting and analysing travel surveys

  • Travel diaries with activity-based approach

  • Sample range from 200 to over 20,000 households

  • Mainly CATI with web-based data collection and quality enhancement

  • Two-stage surveys: Stated Preferences based on given trips and situational experiments

  • Travel behaviour modelling

  • Research projects to understand the causal relationship behind human mobility


NHTS Italy surveys - The SIMPT experience

  • National household travel survey for the Italian transportation model SIMPT (Sistema Informativo per il Monitoraggio e la Pianificazione dei Trasporti)

  • Covering summer and winter mobility (two demand models)

  • Concurrent panel and one-off survey

  • Focus: cross-border travel between provinces

  • Correct determination of trip rates for the whole spectrum of trip lengths

  • Net sample: 21,779 households

  • Duration of the actual field survey: 12 months

  • Application of „virtual call center“ technique (VCC)

  • CATI with web-based data collection and realtime eService requests for quality control


Part A surveys - The SIMPT experienceSURVEY METHOD


Survey steps surveys - The SIMPT experience


Multi-level mobility survey surveys - The SIMPT experience

Questionnaire: Overview

pages

Section A: Household data 1

Persons, vehicles, household head, accessibility of PT stops, telecommunications, income

Section B: Person data 1

Year of birth, occupational status, PT season tickets, driving licence, car availability, normality of reporting week

Section C: Everyday trips 3

Trip diary; reporting period 1 day

Section D: International journeys 1

Number of journeys + 3 most recent in detail; reporting period 6 months

Section E: Long/medium distance trips 8

Trip diary; domestic trips only; reporting period 1 day


Questionnaire: Long/medium distance trips (LDT) surveys - The SIMPT experience

All LDT in this section restricted

to domestic trips


Definition of a long-distance trip surveys - The SIMPT experience

  • Pilot study in May/June 2004 to determine the optimal survey design

  • Section E was tested in four different versions depending on the minimum distance and the reporting period:

*without commuter trips

 Main study: Trips over 20 km OR inter-provincial trips

7 reporting days


Survey phases surveys - The SIMPT experience

  • Winter phase breakdown into one-off and triple survey (panel)

  • Recruitment of panel participants during the summer period: 81% of the respondents joined the panel

  • No replenishment of panel loss: 56% of the original recruits remained until the final panel wave


Why a panel? surveys - The SIMPT experience

Pro‘s

  • Knowledge not only about collective but also about individual variation in terms of activity and mobility patterns

  • One-off survey: 20% transit share

  • Panel survey: 15% are always the same people, 5% alternating

    • Less variance of data

    • Lower costs for model update

    • Better understanding of long-term changes

    • Identification of multi-modal person groups

      Con

    • Panel mortality and fatigue

       Combination of one-time and panel survey


  • Survey progression (winter phase 2004-05) surveys - The SIMPT experience

    Easter break

    Christmas break

    Partial exchange

    of address stock

    Technical problems!

    Problems finally solved


    Part B surveys - The SIMPT experienceTECHNOLOGY


    PTV eServices surveys - The SIMPT experience

    enable realtime geocoding, routing and mapping

    Architecture


    Virtual call center: Some impressions surveys - The SIMPT experience


    Call center in Perugia surveys - The SIMPT experience


    Enter trip destination surveys - The SIMPT experience

    Activates geocoding

    Trip form


    Scalable map surveys - The SIMPT experience

    Select correct address

    from proposals


    Navigation between trips surveys - The SIMPT experience

    Activates routing


    Single trip surveys - The SIMPT experience

    Trip chain

    Calculates distance and time


    Monitoring surveys - The SIMPT experience

    VCC technology offers several control functions to the survey manager

    • Names of interviewers currently logged-in

    • Log-in and log-out times for each interviewer

    • Completed interviews per interviewer and period

    • Completed and missing interviews per province

    • Trip rates per interviewer and household

      etc.


    Assessment and outlook surveys - The SIMPT experience

    • Multi-level mobility approach with particular designs seems to be trend-setting for travel surveys

    • VCC technology works very well in terms of robustness and speed

    • Commercially rewarding: reduction of the costs per response unit in comparison to established techniques

    • Large flexibility in the disposition of workplaces and staff

    • Permanent monitoring, realtime control and electronic timestamps improve staff morale and affects data quality positively

    • Application of eServices for geocoding, mapping and routing during the interview boosts correct localisation of addresses


    WWW.PTV.DE surveys - The SIMPT experience

    PTV – cutting edge mobility.

    PTV Planung Transport Verkehr AG

    D-76131 Karlsruhe

    GERMANY


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