TRB’s Transit Cooperative Research Program (TCRP) Synthesis 69: Web-Based Survey Techniques explores the current state of the practice for web-based surveys.  The report examines successful practice, reviews the technologies necessary to conduct web-based surveys, and includes several case studies and profiles of transit agency use of web-based surveys.  The report also focuses on the strengths and limitations of all survey methods. A copy of this report can be found at https://onlinepubs.trb.org/onlinepubs/tcrp/tcrp_syn_69.pdf