Be it enacted by the Senate and House of Representatives of the State of Delaware in General Assembly met:
Section 1. That Chapter 165 of the Revised Code of Delaware, 1935, as amended, be and the same is hereby amended by repealing all of paragraph (a) of 5602. Sec. 64, and substituting therefor the following:
(a) Every person licensed as an operator or chauffeur shall write his usual signature with pen and ink in the spaces provided for that purpose on the license certificate, and such license shall not be valid until the certificate is so signed.