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CBB Guides main functions is to assist the blind and colorblind persons on the road which they can be more secure about themselves. We combine signed instructions to assist blind and colorblind persons, so they do not cross the road in fear. Two models was design; 1) linear tiles guide which blind and colorblind persons can follow the linear tiles guide, and 2) dot tiles guide, once use linear tiles guide walk straight forward it can take you to the dot tiles guide, this represent stop, straight, or turning (it include red and green light, when RED X showing it represent NOT okay to pass, if showing GREEN⇧ it represent okay to go forward).
Southern Taiwan University of Science and Technology