What 393.25E means in plain language
Your rear lamps and reflectors—the lights and reflective devices at the back of your truck—need to be visible to drivers behind you. This regulation requires that nothing (a load, tailboard, cargo covering, or any obstruction) blocks those lights from view.
Why? Rear lamps signal braking, turning, and presence. If a load obscures them, drivers behind you can't see your brake lights or turn signals in the dark, at dusk, or in poor visibility. That's a collision risk. Reflectors serve the same purpose at night when lights aren't on. The rule is straightforward: pack, load, and secure your cargo so your rear lighting system stays clear and functional to anyone following you.
What our enforcement data actually shows
Across our 13 million inspection records, 393.25E has been cited 457 times all-time, with 290 citations in the last 12 months and 68 in the last 90 days. This code ranks #954 out of 3,036 FMCSR codes by citation volume—it's uncommon compared to many safety violations.
The critical number: our data shows a 2.0% out-of-service rate for 393.25E (9 OOS placements out of 457 all-time citations). This is dramatically lower than the all-FMCSR average of 31.4%. In practical terms, if you're cited for 393.25E, you'll almost certainly be allowed to continue driving after the inspection; you're not facing an immediate roadside shutdown. The 2.0% rate reflects the fact that obscured rear lamps are a visibility and collision risk, but DOT inspectors treat it as correctable on-site in most cases.
Monthly trend data from the last 12 months shows citation volume climbing through mid-year, peaking in January 2026 at 38 citations, then moderating. The consistency of low OOS rates month-to-month (only 4 OOS placements across 290 citations in the last year) reinforces that enforcement here focuses on correction rather than removal.
Who gets cited most
Our enforcement records over the last 180 days show Texas leads significantly: 84 citations with a 2.4% OOS rate. North Carolina and New Mexico follow with 22 citations each, though both showed 0% OOS rates in that period. Illinois recorded 16 citations with a notably higher 6.3% OOS rate—the only state in the top five where out-of-service placement was more frequent.
Across all-time data, JRF Corporation (USDOT 659876) appears most frequently in our 393.25E citations with 6 total. Autotransportes Romedu SA de CV (USDOT 1148259) follows with 5 citations. These numbers reflect the reality that any carrier operating long enough and at sufficient volume will encounter this violation; the data shows no pattern of systemic negligence among these carriers.
How severe is this compared to similar codes
In the Vehicle Maintenance category, 393.25E sits in the middle of the severity spectrum when measured by enforcement frequency and enforcement consequence.
393.9 (Inoperable Required Lamp) dwarfs 393.25E: 180,097 all-time citations versus 457 for 393.25E. Its 6.9% OOS rate is higher than 393.25E's 2.0%, reflecting that a completely non-functional lamp is treated more seriously than one that's merely obscured.
393.11 (Lighting devices/reflectors) is broader in scope and shows 179,734 citations all-time with a 1.8% OOS rate—nearly identical to 393.25E. Both are low-OOS offenses because they're pre-trip correctable without roadside repair.
396.3(a)(1) (Inspection/repair/maintenance—general) represents systemic maintenance failures and shows 236,919 citations with a 45.3% OOS rate. That massive gap underscores that 393.25E is a specific, localized issue (load security), not a pattern of neglect.
How to avoid it
The co-occurring violation pattern in our last 90 days of data reveals the root cause: 393.25E commonly appears alongside 393.9 (Inoperable Required Lamp, 18 shared inspections) and 393.9TS (Inoperative turn signal, 12 shared inspections). This tells us that when rear lamps are obscured, inspectors often find other lighting defects too. The connection is cargo placement and load security.
Here's what to do before and during each trip:
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Check rear clearance before loading. Walk around your truck's back end and confirm all rear lamps and reflectors are unobstructed. This takes 30 seconds and prevents the citation entirely.
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Secure your load or tailboard with gaps. If you're transporting freight with a tailboard or covering, ensure air and light can reach your rear lamps. Don't pack or tarp right up to the back. Leave a sight line.
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Inspect lamps themselves for function. Since 393.25E commonly co-occurs with inoperable lamp codes, a quick tap-test of your brake lights (or have a spotter confirm they illuminate) during pre-trip takes the guesswork out. A broken lamp and a blocked lamp look the same to a following driver.
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Pay attention to vehicle-specific load geometry. Our enforcement data shows Freightliner (114 citations), Kenworth (71), and Peterbilt (52) trucks cited most frequently for 393.25E. If you drive one of these popular models, the cab-to-rear proportion and cargo height are likely similar to thousands of others; confirm your load placement doesn't follow a pattern you've seen penalized.
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Use reflective tape or strips if your load sits high. While not a replacement for functional lamps, reflective tape on tarps or load covers ensures visibility even if a lamp is momentarily obscured by glare or angle.
The bottom line: this violation is almost never an out-of-service hit. But it is easily preventable. A 30-second walk-around and awareness of what obscures your back end will keep you clear of the 290 citations we've seen in the last year.