The tactile paving brick is a convenient road facility for the blind. Generally, it is paved with three types of bricks. One is the strip direction guide brick, which guides the blind to move forward with confidence. It is called tactile paving brick, or tactile paving direction guide brick; One is the cue brick with dots, which indicates that there is an obstacle in front of the blind person and it is time to turn. It is called the cue brick for tactile paving, or the tactile paving orientation guide brick; Another type is the tactile paving danger warning guide brick. The dot is large, and the warning should not exceed. There is danger ahead.