政策法规现行有效美国危险品合规

§ 172.336 Identification numbers; special provisions.

效力	法规类型	发布日期	生效日期	发文机构
现行有效	部门规章	2026-08-07	2026-09-08	Code of Federal Regulations (CFR) - Transportation (Title 49)

发布08-07

生效09-08

摘要总结AI 辅助解读

本条款规定了美国危险品运输中识别编号（ID Number）的展示方式与豁免情形。核心要求包括：当 placard 上无法显示 ID 时，必须使用橙色面板或白色菱形标牌展示；明确了多隔间罐车、纯汽油/燃料油罐车及含多种石油馏分燃料罐车的 ID 展示替代方案或豁免规则。该规定直接影响危险品包装标记合规性，建议相关方核实最新 CFR Title 49 Part 172 具体执行细节。

(a) When not required or prohibited by this subpart, identification numbers may be displayed on a transport vehicle or a freight container in the manner prescribed by this subpart.
(b) Identification numbers, when required, must be displayed on either orange panels (see § 172.332(b)) or on a plain white square-on-point display configuration having the same outside dimensions as a placard. In addition, for materials in hazard classes for which placards are specified and identification number displays are required, but for which identification numbers may not be displayed on the placards authorized for the material (see § 172.334(a)), identification numbers must be displayed on orange panels or on the plain white square-on-point display configuration in association with the required placards. An identification number displayed on a white square-on-point display configuration is not considered to be a placard.

- (1) The 100 mm (3.9 inch) by 215 mm (8.5 inches) area containing the identification number shall be located as prescribed by § 172.332 (c)(1) and (c)(2) and may be outlined with a solid or dotted line border.

- (2) [Reserved]

(c) Identification Numbers are not required:

Packaging: When: Then the alternative marking requirement is: On the ends of portable tanks, cargo tanks, or tank cars They have more than one compartment and hazardous materials with different identification numbers are being transported therein The identification numbers on the sides of the tank are displayed in the same sequence as the compartments containing the materials they identify. On cargo tanks They contain only gasoline The tank is marked “Gasoline” on each side and rear in letters no less than 50 mm (2 inches) high, or is placarded in accordance with § 172.542(c). On cargo tanks They contain only fuel oil The cargo tank is marked “Fuel Oil” on each side and rear in letters no less than 50 mm (2 inches) high, or is placarded in accordance with § 172.544(c). On one end of nurse tanks if that end contains valves, fittings, regulators or gauges when those appurtenances prevent the markings and placard from being properly placed and visible They meet the provisions of § 173.315(m) of this subchapter N/A. On cargo tanks, including compartmented cargo tanks, or tank cars They contain more than one petroleum distillate fuel The identification number for the liquid petroleum distillate fuel having the lowest flash point is displayed. If the cargo tank also contains gasoline and alcohol fuel blends consisting of more than 10% ethanol the identification number “3475” or “1987,” as appropriate, must also be displayed.

(d) When a bulk packaging is labeled instead of placarded in accordance with § 172.514(c) of this subchapter, identification number markings may be displayed on the package in accordance with the marking requirements of § 172.301(a)(1) of this subchapter.

[Amdt. 172-101, 45 FR 74667, Nov. 10, 1980, as amended by Amdt. 172-74, 47 FR 40365, Sept. 30, 1982; Amdt. 172-109, 52 FR 13038, Apr. 20, 1987; Amdt. 172-110, 52 FR 29528, Aug. 10, 1987; Amdt. 172-123, 55 FR 52593, Dec. 21, 1990; 56 FR 66255, Dec. 20, 1991; 65 FR 50459, Aug. 18, 2000; 73 FR 4716, Jan. 28, 2008; 76 FR 43527, July 20, 2011; 78 FR 14714, Mar. 7, 2013; 78 FR 65478, Oct. 31, 2013]