JOINT MODELLING OF ATTITUDES AND BEHAVIOR IN PROJECT EVALUATION: CASE STUDY OF SINGLE-OCCUPANT VEHICLE TOLL USE OF CARPOOL LANES IN SAN DIEGO, CALIFORNIA

Knowing what people think about the usefulness, fairness, and success of new transport initiatives is vital information for planners and project evaluators. In this paper, the authors demonstrate how a joint model of attitudes and behavior can be used in comprehensive project evaluation. The approach involves analyzing attitude survey data using a structural equations model designed for use with discrete choice and ordinal-scale variables. Their application involves the evaluation of responses to a project that allows solo drivers to pay a fee to use a carpool, or high-occupancy vehicle (HOV) lane facility on the Interstate 15 (I-15) Freeway in San Diego. The attitude survey is of subscribers to the program and a random sample of other freeway users. Four endogenous variables are explained as functions of each other and of exogenous variables such as income, household composition, age and gender. These endogenous variables are: (1) choice of subscription to the program, (2) mode choice of carpooling versus solo driving, (3) perception of the seriousness of the traffic congestion on the route, and (4) attitude towards allowing solo drivers to pay to save time by using the carpool lanes.

• Corporate Authors:

  University of California, Irvine

  Institute of Transportation Studies
  4000 Anteater Instruction and Research Building
  Irvine, CA  United States  92697
• Authors:
  • Golob, T F
  • Supernak, J
• Publication Date: 1998-8

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Age; Attitudes; Behavior; Carpools; Choice models; Gender; High occupancy vehicle lanes; Households; Income; Road pricing; Single occupant vehicles; Surveys; Traffic congestion
• Uncontrolled Terms: Joint model
• Geographic Terms: San Diego (California)
• Subject Areas: Highways; Planning and Forecasting; Safety and Human Factors; Society; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00769562
• Record Type: Publication
• Report/Paper Numbers: UCI-ITS-WP-98-18
• Files: TRIS
• Created Date: Sep 3 1999 12:00AM