This document summarizes Katja Leyendecker's PhD research comparing perceptions of cycling infrastructure in Newcastle, UK and Bremen, Germany. The research uses a socio-ecological framework to examine (1) transport policies through document analysis, (2) street observations and secondary data, and (3) interviews with non-cyclists. By understanding public perceptions of urban cycling spaces, the research aims to inform policy and decision-making to better support increased cycling rates. The study is supervised by Dr. Seraphim Alvanides and Prof. Ruth Dalton at Northumbria University.