# R&R Trucking, AATCO, NEI — Hazardous Materials Safety Interpretation - **operation:** document - **citation:** 17-0034 - **title:** R&R Trucking, AATCO, NEI — Hazardous Materials Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 2017-05-25 - **effective on:** Not available - **summary:** 17-0034 response to R&R Trucking, AATCO, NEI concerning 172.516. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-17-0034.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-17-0034.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-17-0034 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2017/170034.pdf **body:** <<>> David Vargyas Safety Director R&R Trucking, AATCO, NEI 302 Thunder Road Duenweg, MO 46841 Reference No. 17-0034 Dear Mr. Vargyas: This letter is in response to your March 31, 2017, email requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to the display of placards in accordance with § 172.516(c)(5). Specifically, you ask what constitutes the text or identification number on a placard to no longer be displayed horizontally. You also provide examples of a variety of placards and ask if they are in compliance with § 172.516(c)(5). The answer is yes. The examples you provided meet the intent of § 172.516(c)(5). Section 172.516(c)(5) requires that each placard on a transport vehicle, bulk packaging, freight container or aircraft unit load device have the authorized hazard class name or identification number displayed horizontally, reading from left to right. With respect to what constitutes "horizontal," in the absence of defining criteria in the HMR we rely on a standard dictionary definition, which defines horizontal as "parallel to, in the plane of, or operating in a plane parallel to the horizon or to a baseline." Based on this definition, it is the opinion of this Office that the placard text or identification numbers are displayed in a horizontal manner so that they can be read from left to right. I hope this information is helpful. Please contact us if we can be of further assistance. Sincerely, Chief, Standards Development Branch Standards and Rulemaking Division <<>> Please submit this as a letter of interpretation. Please let me know if you have any questions. Thanks, Jordan From: David Vargyas [mailto:David.Vargyas@randrtruck.com] Sent: Friday, March 31, 2017 9:59 AM To: PHMSA HM InfoCenter ; David Vargyas Subject: Letter of Interpretation 3-31-17 U.S. DOT PHMSA Office of Hazardous Materials Standards Attn: PHH-10 East Building 1200 New Jersey Avenue, SE. Washington, DC 20590-0001 March 31, 2017 To Whom It May Concern: I am requesting a Letter of Interpretation regarding PHMCSA Sec. 172.516(c)(5). At what point would placards be considered no longer horizontal and no longer in compliance? I have attached pictures of placards on a trailer. I am specifically interested to know if the two placards labeled 1223 and 1325 are compliant. Your guidance is appreciated. David Vargyas Safety Director R&R Trucking, AATCO, NEI P: 417-623-6885, x2130 This email and any files transmitted with it are CONFIDENTIAL and intended solely for the use of the addressee. If you have received this email in error, please delete this email and notify the sender immediately. <<>> 1223 1325) 1263 CORROSIVE FLAMMABLE DANGEROUS cking <<>> DANGEROUS FLAMMABLE CORROSIVE 1263 325 1223 - **truncated:** false - **body characters:** 2859