The driver of a vehicle approaching a totally or partially blind pedestrian who is carrying a cane predominantly white or metallic in color (with or without a red tip) or using a dog guide shall take all necessary precautions to avoid injury to such blind pedestrian and dog guide, and any driver who fails to take such precautions shall be liable in damages for any injury caused such pedestrian and dog guide; provided that a totally or partially blind pedestrian not carrying such a cane or using a dog guide in any of the places, accommodations or conveyances listed in § 51.5-44, shall have all of the rights and privileges conferred by law upon other persons, and the failure of a totally or partially blind pedestrian to carry such a cane or to use a dog guide in any such places, accommodations or conveyances shall not be held to constitute nor be evidence of contributory negligence; provided, that nothing in this section shall be construed to limit the application of § 46.2-933 or § 46.2-934.