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Well-designed wayfinding signs play an important role in improving the service level of metro stations, ensuring the safety of passengers in evacuation, and promoting the sustainable development of public transport. This study explored the effects of ambient illumination, color combination, sign height, and observation angle on wayfinding signs' legibility in metro stations. In the experiment, simulated metro-wayfinding signs were made to test legibility. As designed, the legibility wasdoi:10.3390/su12104133 fatcat:witdpx6wuff3rhcrjxw2e5rhge