This chapter answers the research questions listed in Chapter 1, summarizes other key findings and conclusions drawn from the analyses conducted in this project, and provides suggestions for further ...

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

This chapter provides a review of various AADT estimation methods available in the literature and presents relevant findings, strengths, and weaknesses, as well as an assessment of the methods based ...