49 CFR § 389.21 - Submission of written comments.
(a) You may submit comments identified by the docket number provided in the rulemaking document using any of the following methods. To avoid duplication, please use only one of these four methods.
(1) Federal eRulemaking Portal: http://www.regulations.gov. Follow the online instructions for submitting comments.
(2) Mail: Dockets Operations, U.S. Department of Transportation, 1200 New Jersey Avenue SE, West Building, Ground Floor, Room W12–140, Washington, DC 20590–0001.
(3) Hand Delivery or Courier: West Building, Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.
(4) Fax: (202) 493–2251.
(b) All written comments must be submitted in English and include copies of any material that the commenter refers to within the comment.