Transportation Satisfaction and Life Satisfaction: Examining the Roles of Attitudes and Personality

Life satisfaction has emerged as an important indicator of how individuals evaluate their overall life circumstances, with increasing relevance for understanding how public infrastructure systems contribute to quality of life. Transportation systems play a central role in enabling access to employment, services, and social interaction, yet their contribution to overall life evaluation remains insufficiently understood within transportation planning and policy analysis. This gap limits the ability of agencies to fully account for how infrastructure and service decisions affect user experience, system utilization, and broader societal outcomes. Life satisfaction, as used here, refers to a self-evaluation of one's life as a whole, according to metrics that individuals themselves value rather than externally imposed circumstantial measures. Two broad psychological frameworks explain variation in life satisfaction. The top-down framework holds that personality plays a dominant role, with more sociable, less neurotic, and more positively oriented individuals predisposed to higher satisfaction regardless of circumstances. The bottom-up framework, by contrast, argues that actual life circumstances across key domains (most commonly job satisfaction and relational satisfaction) are the primary drivers. These frameworks are not mutually exclusive, and this research accommodates both by simultaneously examining domain-specific transportation circumstances alongside personality and attitudinal factors as determinants of both transportation satisfaction and overall life satisfaction. Transportation infrastructure is a particularly promising domain through which to examine life satisfaction, as it intersects with several fundamental human needs. But, given the importance of attitudes and personality in determining life satisfaction, the research team focuses on the ways that transportation-related attitudes and perceptions influence satisfaction as well as on the ways that transportation circumstances interact with personality characteristics to influence satisfaction. Specifically, this research focuses on four attitudinal/personality-related latent constructs. The first construct is desire for autonomy and control. A sense of freedom and control is strongly associated with life satisfaction and has also been closely connected to transportation options/abilities, potentially revealing an important avenue that transportation provision influences overall life satisfaction. The second construct is desire for socialization, which has also been closely associated with overall life satisfaction in the existing literature. However, here the focus is also on the interaction between transportation context and socialization preferences. These interaction effects allow us to determine if more socially-inclined individuals exhibit elevated levels of life satisfaction when using select modes of transport (such as walking and public transit that may facilitate incidental social interactions). The third latent construct focuses more specifically on transportation, encompassing perceptions of travel time and the productivity/enjoyment of travel itself. Intuitively, this type of domain-specific personality alignment is closely related with transportation-specific satisfaction as well as with broader life satisfaction. Finally, the last latent construct is somewhat broader, focusing on values alignment. In this case, rather than focusing on any specific values (such as sustainability and safety), the team examines the extent to which individuals consider secondary (value-oriented) effects (such as, status associated with a particular mode) when considering their transportation options. This value alignment is an important aspect of how individuals consider their own transportation decisions as well as how they make decisions in general, and is closely connected to their own self-image and their own evaluation of their life circumstances. From a transportation planning and policy perspective, this last latent construct has important policy implications, for instance by helping agencies better frame and communicate infrastructure investments and service offerings in ways that resonate with the values of different user segments. The study will use data from the Transportation Heartbeat of America survey, a national survey that captures respondents' demographic characteristics, transportation habits, and transportation-related attitudes. As noted above, the team focuses on two main outcomes: self-reported satisfaction with transportation options and self-reported life satisfaction, each measured on a five-point agreement scale. The modeling framework employs a generalized heterogeneous data model (GHDM) that jointly estimates the two satisfaction outcomes as a function of observed sociodemographic characteristics, transportation context attributes, and the four latent constructs described above. Overall, the project is designed to produce insights that are directly relevant to transportation agencies. The findings will support more effective prioritization of investments, better system performance, and improved evaluation of transportation projects in terms of their broader impacts on user experience and system effectiveness.

Language

• English

Project

• Status: Active
• Funding: $75,000.00
• Contract Numbers:

  69A3552344815

  69A3552348320

• Sponsor Organizations:

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  University of Texas at Austin

  Austin, TX  United States  78712
• Performing Organizations:

  University of Texas at Austin

  Austin, TX  United States  78712
• Principal Investigators:

  Bhat, Chandra

• Start Date: 20260601
• Expected Completion Date: 20270531
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers

Subject/Index Terms

• TRT Terms: Attitudes; Customer satisfaction; Infrastructure; Personality; Quality of life; Travel time
• Subject Areas: Planning and Forecasting; Safety and Human Factors; Society; Transportation (General);

Filing Info

• Accession Number: 02002869
• Record Type: Research project
• Source Agency: Center for Understanding Future of Travel Behavior and Demand
• Contract Numbers: 69A3552344815, 69A3552348320
• Files: UTC, RIP
• Created Date: Sep 18 2026 10:22AM