Ohio Revised Code Title XLV. Motor Vehicles Aeronautics Watercraft § 4506.131

(A)(1) The registrar of motor vehicles shall not issue, renew, upgrade, or transfer a hazardous materials endorsement for a commercial driver's license to any individual authorizing that individual to operate a commercial motor vehicle transporting a hazardous material in commerce unless the registrar has received from the transportation security administration a determination indicating that the individual does not pose a security risk warranting denial of the endorsement.

(2) The registrar may issue, renew, upgrade, or transfer a hazardous materials endorsement for a commercial driver's license to an individual who is under twenty-one years of age if both of the following apply:

(B)(1) Immediately upon receiving a determination from the transportation security administration that an individual poses a security risk warranting denial of a hazardous materials endorsement, the registrar shall revoke any existing hazardous materials endorsement and shall refuse to issue a hazardous materials endorsement for the individual named as a security risk.

(2) Within fifteen days of receiving any determination from the transportation security administration indicating the status of an individual's security risk, the registrar shall notify the commercial driver license information system of the results of the security assessment.