Violation codes / 393.30-B

393.30-B

What the rule actually says

This violation cites 49 CFR 393.30, battery installation. The regulation reads:

Every storage battery on every vehicle, unless located in the engine compartment, shall be covered by a fixed part of the motor vehicle or protected by a removable cover or enclosure. Removable covers or enclosures shall be substantial and shall be securely latched or fastened. The storage battery compartment and adjacent metal parts which might corrode by reason of battery leakage shall be painted or coated with an acid-resisting paint or coating and shall have openings to provide ample battery ventilation and drainage. Wherever the cable to the starting motor passes through a metal compartment, the cable shall…

49 CFR 393.30, Battery installation. Read the full section on eCFR

Quoted verbatim from the Electronic Code of Federal Regulations. Nothing here is a paraphrase, and nothing here is legal advice on a citation.

How often this comes up

This violation was recorded 15,878 times across the roadside inspections in the FMCSA file, making it the 179th most frequently cited code. Whether a given instance puts a vehicle or driver out of service is decided at the roadside by the inspector, not by the code itself, so the same violation can end a trip or simply be noted.

It sits under 49 CFR Part 393, which covers parts and accessories. To see it in context, look up a carrier and read its inspection history: the same code appearing repeatedly is a different signal from a single occurrence.

Look up a carrier's inspection record

Other parts and accessories violations

• 393.9 Inoperable Required Lamp
• 393.47E Brake Out of Adjustment - Roto, Clamp (Short…
• 393.75A3-TAOL Tires - All others, leaking or inflation les…
• 393.78 Wipers - Inoperative / missing / damaged wip…
• 393.9TS Inoperative turn signal
• 393.9A-LIL Lighting - Identification lamp(s) inoperativ…
• 393.75A3 Tire-flat and/or audible air leak
• 393.95A No/discharged/unsecured fire extinguisher
• 393.95F Emergency Equipment - Stopped vehicle warnin…
• 393.60C Windshield - Damaged or Discolored
• 393.55E-B Air Brake - ABS malfunction lamp defective o…
• 393.45B2UV Brake Hose or Tubing Chafing and/or Kinking …

Counts are from the FMCSA Inspections and Violations file via data.transportation.gov. This describes how the violation is recorded, and is not legal advice on a citation.