Nothing contained in §§ 56-5-3190 and 56-5-3200 shall be construed to deprive any totally or partially blind or otherwise incapacitated person not carrying such a cane or walking stick or not being guided by a dog of the rights and privileges conferred by law upon pedestrians crossing streets or highways, nor shall the failure of such totally or partially blind or otherwise incapacitated person to carry a cane or walking stick or to be guided by a guide dog upon the streets, highways, or sidewalks of this State to be held to constitute or be evidence of contributory negligence.