StacksVerified U.S. regulatory reference

49 CFR §173.116

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The hazard zone of a Class 2, Division 2.3 material is assigned in column 7 of the § 172.101 table. There are no hazard zones for Divisions 2.1 and 2.2. When the § 172.101 table provides more than one hazard zone for a Division 2.3 material, or indicates that the hazard zone be determined on the basis of the grouping criteria for Division 2.3, the hazard zone shall be determined by applying the following criteria:
  2. (b)The criteria specified in paragraph (a) of this section are represented graphically in § 173.133, Figure 1.