What is the biggest challenge pedestrians and cyclists face on the road? For some it is navigating turning vehicles. For others it is waiting for excessively long red-light times or determining unmarked or unclear paths through intersections, or inadequate sight distance. In designing intersections and infrastructures the most vulnerable road users need to be considered. This training will explore 20 performance measures, or design flags, that can help identify potential safety, accessibility, operational, or comfort issues for pedestrians and bicyclists. These design flags represent issues that can be addressed in the development and evaluation intersections and interchanges.