Direct answers about 172.203(p) citations: out-of-service risk, CSA points, next steps, and how this hazmat violation compares to similar codes.
Ranks #2,428 of 3,146 FMCSR codes by citation frequency • OOS rate of 0.0% is below the FMCSR-wide average of 33.3%.
No "Non-odorized" entry for LPG
Direct answers grounded in TruckCodex inspection data
No. Across our inspection records, zero out-of-service orders have been issued for 172.203(p) violations (0.0% OOS rate out of 5 all-time citations). This is significantly lower than the 31.4% average OOS rate across all FMCSR codes. However, the hazmat category itself includes much more serious violations—some peer codes like 177.834A-HMC carry a 99.2% OOS rate—so context and severity matter.
Very rarely. Our 13 million+ inspection records show only 5 all-time citations for this code, with zero citations in the last 90 days and zero in the last 12 months. This ranks 172.203(p) at #2406 out of 3,036 FMCSR codes by citation volume. It is one of the least-cited hazardous materials violations in roadside enforcement.
No, it is on the less-serious end of the hazmat spectrum. Across 13 million inspections, similar hazmat loading and placarding codes show dramatically higher enforcement: 177.834A-HMC has 3,954 citations with 99.2% OOS rate, while 177.834(a) has 3,839 citations with 97.9% OOS rate. By contrast, 172.203(p) has only 5 citations and 0.0% OOS rate—indicating inspectors cite it rarely and it does not result in vehicle removal.
Yes. If you believe the citation is factually inaccurate—for example, if LPG odorization was actually present but not recognized by the inspector—you can file a DataQs (FMCSA database quality and reporting) challenge. DataQs is designed for documentation and technical errors. Submit your challenge through the FMCSA Safety Management System portal with evidence (shipping papers, odorization certificates, carrier records) that contradicts the violation finding.
Across our 13 million records, the 5 all-time citations for 172.203(p) are distributed one each among these carriers: UNITED PETROLEUM TRANSPORTS INC (USDOT 185040), PC TRANSPORT INC (USDOT 191414), VAL TRANSPORT LLC (USDOT 687455), R L C TRUCKING LLC (USDOT 1964323), and INTER PETROLEUM LLC (USDOT 2442859). No single carrier dominates this violation, suggesting it is an isolated finding rather than a systemic enforcement focus.
Low urgency from an out-of-service perspective—the code carries 0.0% OOS rate. However, it relates to hazardous materials compliance, so you must address it to prevent future citations and maintain regulatory standing. The fact that zero citations have occurred in the last 90 days and zero in the last 12 months suggests this is not an active enforcement priority. Correct your LPG odorization procedures and documentation within your normal compliance review cycle.
Citations for hazmat violations typically attach to the carrier and vehicle under FMCSA's Compliance, Safety, Accountability (CSA) program. The carrier is responsible for ensuring all hazardous materials meet regulatory requirements before dispatch. Individual drivers cited for 172.203(p) should notify their carrier's safety manager immediately, but the compliance obligation and CSA score impact fall primarily on the carrier's account.
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Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
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