To make the indicator serve for accident prevention and prevention of crimes at night by making a powder of a specific luminous raw material having afterglow for a long time by receiving sunlight to make a dye, making a traffic indicator out of it, and using it at day and night.

A specific luminous raw material having afterglow not exceeding 10 hours is processed to particulate not exceeding 200-500 mesh, which is made to be a dye to be dyed on a fiber, textile or the like so as to make various traffic indicators or the like of traffic safety. In addition, the luminous raw material (particulate) is added and kneaded to be formed into resin so as to be used. The traffic safety indicator or the like can be easily made, light is emitted even at night even when nothing is irradiated, and anybody can see it from far away. Thereby it is made the indicator for day and night, and can be served for traffic accident prevention and the prevention of crimes.