沖縄県与那国町津波避難案内誘導表示 
沖縄県与那国町

Tsunami evacuation guide signs 
Yonaguni municipality, Okinawa

Category: Environment Date: 2013

The municipality of Yonaguni, Okinawa set up a series of tsunami evacuation guide signs, in addition to the multilingual tsunami risk alert signs.
To guide foreign visitors the sign has five languages (Japanese, English, traditional and simplified Chinese, Korean,) with pictograms based on ISO and JIS standards. Yonaguni has few streetlights and gets very dark at night, so in order to support nighttime evacuation phosphorescent panels that glow without energy supply were used for the signs. Considering the time length from dusk to dawn, panels that glow for long hours (8 hours) were chosen.