FMCSR 393.53(a): Steering System Wear – Citations & Next Steps

No. Across our 13 million inspection records, 393.53(a) citations for worn steering components have resulted in zero out-of-service placements. The 0.0% OOS rate means inspectors are documenting the defect but allowing you to continue operating while you arrange repairs.

However, this is significantly lower than the 31.4% all-FMCSR average OOS rate. Worn steering is a safety risk that requires prompt attention—don't interpret a non-OOS citation as permission to delay repairs.

This violation carries a CSA severity weight of 7 points. The actual CSA points added to your Unsafe Driving or Mechanical BASIC depend on the 30-day multiplier: if it's your first citation in 30 days, you receive 7 points; if you have multiple violations in the same 30-day window, the multiplier increases.

Steering system defects are weighted moderately because they directly affect vehicle control and safety. Report the citation to your fleet safety manager immediately so they can track your CSA history and adjust your driving assignments if needed.

Immediate steps:

1. Document the inspection. Request a copy of the inspection report and photographic evidence of the worn components cited.
2. Schedule repair immediately. Have your mechanic inspect the universal joints, ball joints, tie rods, drag links, or pitman arms identified in the citation.
3. Notify your carrier/fleet. Provide the inspection report and repair timeline to your safety manager or company dispatcher.
4. Retain repair receipts. Keep invoices showing what was replaced and when.
5. Request follow-up inspection (optional). Some states allow re-inspection to confirm repairs; ask your carrier if this is standard practice.

Do not ignore this citation. Continued operation with known worn steering components increases accident risk and can result in future out-of-service orders.

Perspective matters. Our inspection data shows 393.53(a) is ranked #1514 of 3,036 FMCSR codes by citation volume, making it relatively rare—we've recorded only 74 all-time citations.

Compare it to peer violations: inoperable lamps (393.9(a)) occur 8,918× more frequently (660,737 citations) with a 15.4% OOS rate. Defective slack adjusters (393.47E) are cited 2,435× more often (180,363 citations) but also have a 0.0% OOS rate. The rarity of 393.53(a) citations suggests inspectors reserve this code for genuinely worn steering—meaning it's a serious condition that warrants immediate repair.

Yes, you can contest through the DataQs (SAFER) system. Steering component wear is an equipment finding—typically documented by visual inspection and measurement against wear specifications. Your contestability depends on whether:

• The inspector's measurement or classification was objectively wrong (e.g., components within tolerance)
• The inspection was incomplete or didn't follow FMCSA procedures
• You have repair receipts showing the defect was already corrected before citation issuance

Contact your carrier's FMCSA compliance team or a transportation lawyer to review the inspection details. DataQs challenges require technical evidence, not assumptions. Most steering defects, once documented, are hard to contest if the wear is measurable.

Our records show 393.53(a) is extremely rare across all states. With only 74 all-time citations in our 13 million inspection database, no single state has a statistically significant concentration. The top carriers cited include Legacy Construction and Land Mgmt LLC, Alberto Villarreal, and Merle E Huls (each with 2 citations), and the most common vehicle makes are Freightliners (9 citations) and Peterbilts (5 citations).

This low frequency means 393.53(a) is cited only when inspectors observe clear, measurable wear—not as a routine defect-finding. If you're cited, treat it as a critical safety flag rather than a common maintenance issue.

Very urgent. Although 393.53(a) citations don't result in immediate out-of-service placements (0.0% OOS rate), worn steering components—universal joints, ball joints, tie rods, pitman arms—directly affect your ability to control the vehicle. A failure under load, especially on a highway or in traffic, can cause a catastrophic accident.

Our enforcement data shows zero citations in the last 12 months and last 90 days, indicating this violation is rare. When it is cited, it reflects a severe condition. Schedule repairs within days, not weeks. Do not continue long-haul runs with known steering wear. Verify the repair with a licensed mechanic and document completion.

Under FMCSA's Compliance, Safety, Accountability (CSA) program, vehicle maintenance violations like 393.53(a) are attributed to the carrier, not the individual driver. The citation contributes to your company's Mechanical BASIC score, which affects the carrier's overall safety rating and CSA percentile.

However, as the driver, you benefit from reporting pre-trip or in-service defects promptly. If you identified worn steering and notified your carrier and they failed to repair it, that documented communication protects you if the carrier faces enforcement action. Always complete your pre-trip inspection and report findings immediately.