Wayfinding, an essential aspect of public transport, is not always accessible, user-friendly, or well-designed. Because of this, people with disabilities, language barriers, or other difficulties understanding information or navigating public transport are put at a disadvantage. This thesis explores prior research and projects, as well as in-depth case studies of three cities' public transport systems, to identify best practices and guiding principles for enhancing accessibility, ease of use, and design. These principles can be incorporated into a unifying standard to improve public transport wayfinding and bridge gaps in existing systems.