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When driving on the road with limited lights, people may over look potholes on the road. The pothole people over looked may be deep enough to crash a car. We redesign the procedure of road building added layers of luminous materials between the layers of bitumen. At night the pothole will luminesce different color depend on the depth of the pothole. Thus the driver can be warned and the maintenance crew can tell whether the road need patch by identity the color of the pothole