published journal article

California Vehicle Inventory and Use Survey: Pilot Study Insights

Publication Date

December 31, 2015

Associated Project

California Vehicle Inventory and Use Survey

Author(s)

Kyungsoo Jeong, Andre (Yeow Chern) Tok, Stephen Ritchie, Jun Park

Areas of Expertise

Travel Behavior， Land Use， & the Built Environment, Freight， Logistics， & Supply Chain

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Abstract

With the discontinuation of the national Vehicle Inventory and Use Survey (VIUS) in the United States in 2002, insufficient data have been available for well more than a decade on commercial vehicle activity. The goal of this pilot survey effort was to develop a preliminary design for a proposed California Vehicle Inventory and Use Survey (Cal-VIUS) and to test it with a scaled-down sample to provide guidance on the full-scale survey design. The sample was drawn from vehicle records obtained from the California Department of Motor Vehicles and International Registration Plan data sets by using a stratified sampling technique to capture intrastate and Interstate commercial vehicle activity in California. Limitations identified in the 2002 VIUS were addressed in the Cal-VIUS pilot survey questionnaire, which was administered on an online survey platform (http://surveyanalytics.com). The questionnaire was designed to collect annual and trip-based activity data through two complementary surveys: a web-based fleet manager survey and a smartphone app-based driver survey (with web-based option). These surveys were conducted between December 29, 2014, and February 28, 2015, and between February 24 and February 26, 2015, respectively. Results from the web-based fleet manager survey showed that the stratification design was adequate to describe the heterogeneous characteristics of vehicle activities between strata with respect to vehicle miles traveled within California. The driver survey was not fully tested because of limited response. Results from the pilot survey are expected to provide valuable insights to those who are developing future truck-related survey studies.

working paper

Consumer E-Commerce, Virtual Accessibility and Sustainable Transport

Publication Date

November 30, 2002

Author(s)

Jane Gould, Thomas Golob

Areas of Expertise

Travel Behavior， Land Use， & the Built Environment, Freight， Logistics， & Supply Chain

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Abstract

The growth of the Internet has rekindled interest in the relationship between communications and travel. New communication technologies have expanded the range, the type, and the number of transactions that can take place without travel. A number of promotions capture the new tradeoffs between communications and travel: initially, the Internet was referred to as “the information superhighway” and Microsoft ran an ad campaign dubbed “where do you want to go today?” The connection between travel and bytes has been summed up as “The Death of Distance” (Cairncross, 1997). A parallel evolution in telecommunication and transportation was envisioned more than 150 years ago with the inventions of the telegraph and telephone. The telephone was expected to “speed the movement of perishable goods,” “reduce the travels of salesmen,” and “let (itinerant) workers stay at home to be phoned for jobs” (Pool, 1983). Today, the Internet has fueled similar expectations, and many of them center on travelrelated issues. The Internet might relieve demand for new road capacity, slow down the rate of new vehicle ownership, and divert existing travel trips to less congested times. The Internet might help create more sustainable growth in transportation, by providing virtual accessibility. In this paper, we explore the transportation aspects of consumer electronic commerce (e-commerce). Shopping activities are currently automobileintensive in many countries, and increases in e-commerce could portend important changes in transportation patterns and activities.

working paper

Trucking Industry Demand for Information Technology: A Multivariate Discrete Choice Model

Publication Date

May 31, 1999

Author(s)

Thomas Golob, Amelia Regan

Areas of Expertise

Travel Behavior， Land Use， & the Built Environment, Freight， Logistics， & Supply Chain

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Abstract

The objective of this research is to understand the demand for information technology among trucking companies. Of interests in the use of information technologies in both private and for-hire carrier fleet operations. A multivariate discrete technology demand model is developed using data from a large-scale survey of the trucking industry in California. In addition to offering technology providers insight into the market for current and future information technologies the model can inform decisions made by policy analysts about public sector technology implementation aimed at congestion mitigation. The impact of congestion on trucking companies’ profitability and ability to provide timely and reliable service to customers is significant. Successful public sector technology implementation aimed at commercial vehicle operators will be complementary to investments made by companies themselves.