Every holder of an identification card shall write the holder’s usual signature, in a manner acceptable to the Department, in the space provided for that purpose on the card and such card shall not be valid until the card is so signed.

21 Del. C. 1953, § ?3106; 58 Del. Laws, c. 516; 70 Del. Laws, c. 186, § ?1; 81 Del. Laws, c. 183, § 3;