A totally or partially blind pedestrian not carrying a cane as described in Section 21-7-6 or any totally or partially blind person not using a guide dog in any of the places, accommodations, or conveyances listed in Sections 21-7-2 and 21-7-3 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 of a totally or partially blind person to use a guide dog in any such places, accommodations, or conveyances shall not be held to constitute nor be evidence of contributory negligence.