One of the biggest obstacles to people considering biking as an option is the lack of dedicated biking infrastructure and the perception of safety when cars and bikes share the street. Through a web-based application, bikers will be asked to compare the images of two different streets in Pittsburgh (obtained from Google Street View) with regards to various aspects such as bike safety (e.g., which of the two streets is/looks safer to bike on? which of the two streets would you rather bike on? which of the two streets makes you feel happier? etc.).
Once we collect these pairwise comparisons we will built a ranking scheme that can be used to drive recommendations of "safe" paths for cycling.