This document discusses origin-destination (OD) surveys, which are used to understand travel patterns in a given area. It outlines several common methods for conducting OD surveys, including roadside interviews, license plate tracking, and mail/phone surveys. A case study is presented on an OD survey conducted at Havanur Circle junction in Bangalore, India using roadside interviews. The survey found most trips were for work or shopping. Recommendations included changing signal timing and adding infrastructure like underpasses to reduce congestion.