National academies panel embraces new index to measure transportation ‘insecurity’
Editor’s Notebook: How to measure transit insecurity?
Using a split-ballot design to validate an abbreviated categorical measurement scale: An illustration using the Transportation Security Index
In this methodological article published in Survey Practice, the developers of the Transportation Security Index use both content and statistical approaches to identify an abbreviated Transportation Security Index composed of 6 questions (TSI-6). The TSI-6 was then validated using nationally representative data that included a split ballot experiment. The validated TSI-6 successfully reproduces the original, validated TSI-16 but takes less time to complete and identifies fewer (3) categories of transportation insecurity.
Transportation Insecurity: A New Metric to Evaluate Programs and Guide Decision Making
Turning a desert into an oasis; how transportation deserts are impacting Milwaukee
Talking Headways Podcast: Measuring Transportation Insecurity
How Better Measurement Can Improve Transportation Equity in Underserved Communities
How Can We Measure Transportation Insecurity?
Validating the Sixteen-Item Transportation Security Index in a Nationally Representative Sample: A Confirmatory Factor Analysis
In a follow-up article to their 2018 Survey Practice practice article, in this Survey Practice article the developers of the Transportation Security Index draw upon nationally representative survey data and use confirmatory factor analysis to validate the 16-question Transportation Security Index. Results show that transportation insecurity is a unidimensional condition, experienced both materially and relationally.