What 178.338-18(a) means in plain language
This violation concerns the nameplate and specification plate on MC338 cargo tanks—the large cylindrical tanks mounted on trailers that transport hazardous liquids and gases. These plates are permanent, manufacturer-installed labels that identify the tank's construction standards, capacity, and design specifications.
When inspectors cite 178.338-18(a), they're documenting that the required nameplate or specification plate is either missing entirely, illegible beyond recovery, or has been removed. These plates aren't decorative; they're federal identification markers that certify the tank meets Department of Transportation construction requirements.
For a driver, finding this violation on your inspection report means the tank you were pulling either lost its nameplate through damage or deterioration, or it was never properly installed or was removed at some point in the tank's service history.
What our enforcement data actually shows
Across our 13 million+ inspection records, this code ranks #2651 out of 3,036 FMCSR codes by citation volume. We have recorded 2 all-time citations for 178.338-18(a), with 0 citations in the last 12 months and 0 in the last 90 days.
Neither of the 2 all-time citations resulted in an out-of-service placement. This means the OOS rate for this violation stands at 0.0%—notably lower than the all-FMCSR average OOS rate of 31.4%. The rarity and low enforcement severity reflect that missing nameplates, while a regulatory violation, do not typically pose immediate safety risks that warrant removing equipment from service on the spot.
The lack of recent citations suggests inspectors encounter this issue infrequently, or that most MC338 tanks in operation maintain their required identification markings.
Who gets cited most
Our inspection records show extremely limited citation history for this code. The two carriers cited all-time were F L MERRILL CONSTRUCTION INC (USDOT 656235) with 1 citation and EASTEX CRUDE TRUCKING LLC (USDOT 2465819) with 1 citation. Both are isolated incidents in our database.
Without sufficient citation volume across states or carriers, we cannot reliably identify geographic hotspots or fleet-wide patterns. This low enforcement volume means you are statistically unlikely to encounter this citation during your career.
How severe is this compared to similar codes
In the hazardous materials category, this violation sits at the lower end of enforcement severity. Compare it to peer codes in the same regulatory domain:
- 177.834A-HMC (General loading/unloading hazmat) has 3,954 all-time citations with a 99.2% OOS rate—meaning nearly all inspectors remove non-compliant hazmat operations from service immediately.
- 177.817(a) (Placarding violation) shows 2,274 citations with a 75.1% OOS rate—still a high proportion of roadside equipment removals.
- 172.602(c)(1) (Maintenance/accessibility of Emergency Response information) has 1,464 citations but a 0.0% OOS rate, matching the severity profile of the nameplate code.
The missing nameplate violation falls into a category where enforcement is infrequent and out-of-service action is rare, suggesting regulators view it as a documentation or marking deficiency rather than an active hazard.
How to avoid it
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Conduct a nameplate walk-around before departure. On every pre-trip inspection of an MC338 tank trailer, walk the full perimeter and verify that the manufacturer's nameplate and specification plate are visible, readable, and securely attached to the tank shell. Look for peeling, corrosion, or missing hardware.
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Report nameplate damage during maintenance. If you notice a nameplate is scratched, faded, or partially detached, report it to your fleet's maintenance team immediately. Do not assume it is "good enough"—a readable plate is a regulatory requirement.
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Photograph the nameplate if you're assigned a new or unfamiliar tank. Take a photo of the nameplate at the start of your first haul to document it was present and intact. This protects you if the tank is later cited and can help your fleet track tank-to-driver assignment history.
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Know which vehicles you're pulling. Confirm with dispatch or your manifest that you're assigned to an MC338 tank and not another tank type. Nameplate requirements apply specifically to MC338 specifications, so knowing your cargo tank class helps you focus your inspection efforts.
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Request tank replacement if the nameplate is unrecoverable. If a nameplate is missing or completely illegible and you discover it during pre-trip, do not depart. Notify your dispatcher and request a different trailer. An unreadable nameplate may trigger a citation and delays your freight.