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Travel and Congestion Study Update. Johanna Zmud Project Director NuStats January 23, 2002. Introduction. Review data flow model Current Status Fall Post-Mortem Spring Production Strategies Data Results. Data Flow per Sample Type (6). Mode Intercept. Recruit. Travel . Retrieve.

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Travel and congestion study update l.jpg

Travel and Congestion Study Update

Johanna Zmud

Project Director

NuStats

January 23, 2002


Introduction l.jpg
Introduction

  • Review data flow model

  • Current Status

  • Fall Post-Mortem

  • Spring Production Strategies

  • Data Results

Study Status Update


Data flow per sample type 6 l.jpg
Data Flow per Sample Type (6)

Mode Intercept

Recruit

Travel

Retrieve

Edit Check

Deliver

Geocode

Study Status Update

GPS Recruit

GPS Data

Comparison




Main sample mode augment sample l.jpg
Main Sample Mode Augment Sample

Study Status Update

*Target mode used in 1 trip in household file




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Status – Delivered Cases

Study Status Update

*Trip data only; no raw GPS data; deliveries will start in February


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Spring Production Strategies

  • Increase CATI Capacity

  • Web survey

  • Use of Partial Completes

Study Status Update


Increase cati capability l.jpg
Increase CATI Capability

  • New DataSource facility in Texas (San Marcos)

  • Caltrans finished – These DataSource surveyors now on SCAG

  • Datascension (Riverside, CA)

Study Status Update



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Web Survey Option

  • Travel information retrieval (Main, RSA)

  • Mode effect measurement

  • www.surveycafe.com

  • Test next two weeks

  • Start using with February recruits

Study Status Update


Current schedule l.jpg

December 1 – 19, 2001

December 14, 2001

January 7, 2002

January 25, 2002

April 28, 2002

PnR to Rail and Bus Intercepts

Start Spring CATI Recruitment

First Spring Travel Day

Next Data Delivery

Last Travel Day

Current Schedule

Study Status Update


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Spring Production Plan

Study Status Update


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Draft Report

  • Draft delivered – Starting February 28

    • Methods Documentation and Data Users Guide

    • Survey Findings

    • Compendium of Tables

    • GPS Analysis

  • Census data for weighting and expansion not accessible until June 2002

  • Final report – raw or expanded?

Study Status Update


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Summary Statistics – Main Sample (N=2420, unweighted)

Study Status Update


Household trips by county of residence and sample type n 4 440 unweighted l.jpg
Household Trips by County of Residence and Sample Type (N=4,440, unweighted)

Study Status Update

*1-day trip rates shown

** None or small number of cases


Person trips by county of residence and sample type n 10 024 unweighted l.jpg
Person Trips by County of Residence and Sample Type (N=10,024, unweighted)

Study Status Update

*1-day trip rates shown

** None or small number of cases


Total vehicle and non vehicle trips by county of residence main sample unweighted l.jpg
Total, Vehicle, and Non-Vehicle Trips by County of Residence (Main Sample, unweighted)

Study Status Update


Total household trips by vehicle ownership by sample type unweighted l.jpg
Total Household Trips by Vehicle Ownership by Sample Type (unweighted)

Study Status Update

* None or small number of cases