Personal Injury

What Counts as 'Negligence' Under Maryland Law | The Guerami Law Firm

Published June 4, 2026 on callamir.com

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CallAmir.com · Maryland Personal Injury · Article 05

What Counts as "Negligence" Under Maryland Law

The Single Most Important Word in Your Case — and the One Most Often Misunderstood

Lawyers and insurance adjusters throw the word "negligence" around constantly. To an injured Maryland family, it sounds like jargon — a label adults use when they mean somebody messed up. In a courtroom, it is not a label. It is a precise legal test with a specific definition, and that definition is what decides whether an injured person recovers anything at all.

Maryland follows the traditional common-law rule. Negligence is the failure to use the care that a reasonable, ordinary person would have used under the same circumstances. Not perfect care. Not extraordinary care. The care of an ordinary, prudent person — judged against what that person would have done in that situation.

A Maryland jury — not the parties, not the adjuster, not even the judge — decides whether the defendant fell short of that standard. That is the entire battleground of the case.

The Reasonable Person Standard

The "reasonable person" is a legal yardstick, not a real human being. Maryland courts use this figure to measure conduct. The reasonable driver checks the mirror before changing lanes. The reasonable property owner inspects the parking lot for hazards before guests arrive. The reasonable dog owner secures an animal that has shown signs of aggression. The reasonable surgeon confirms which knee is being operated on.

When a defendant fails to behave the way an ordinary, prudent person would have under the same circumstances, that is negligence under Maryland law. The test is objective. It does not ask whether the defendant did their personal best. It does not ask whether the defendant was trying. It asks what the ordinary, careful person would have done.

That difference matters. A driver who "did not see" the pedestrian in the crosswalk is still negligent if a reasonable, ordinary driver would have seen the pedestrian. Good intentions are not a defense. Inexperience is not a defense. Distraction is not a defense.

★ Foreseeability is part of the test A defendant is not responsible for every theoretical harm in the universe. Maryland law asks whether the kind of harm that happened was a reasonably foreseeable consequence of the defendant's conduct. A driver running a red light should foresee a crash. A property owner ignoring a broken handrail should foresee a fall. Foreseeability links the breach to the harm.

Negligence Per Se — When the Law Itself Sets the Standard

Maryland recognizes a doctrine called negligence per se — translation: negligence in itself. The idea is straightforward. If the General Assembly or a regulatory body passed a safety statute, it already decided what reasonable conduct looks like. A defendant who violated that statute does not get to argue the issue from scratch.

For negligence per se to apply, three things must line up:

  • The defendant violated a statute or regulation
  • That statute was designed to protect against the type of harm that happened
  • The injured person belongs to the class the statute was meant to protect

When all three line up, the violation itself is evidence of negligence. A driver who runs a red light. A trucking company that puts a driver on the road past federal hours-of-service limits. A landlord who ignores a Baltimore City housing code on stairway lighting. A pharmacy that dispenses the wrong drug in violation of state regulations. These are not arguments about whether a reasonable person would have acted differently. The legislature already answered that question.

★ Negligence per se cuts both ways The doctrine can apply to the plaintiff too. A pedestrian who crossed mid-block in violation of a local ordinance can be hit with the same argument by the defense. In Maryland — a contributory negligence state — that is dangerous. Every statute the injured person may have technically broken at the moment of harm becomes potential ammunition.

Different People, Different Yardsticks

The reasonable-person standard is not one-size-fits-all. Maryland law adjusts the yardstick depending on who is being judged.

Children are not held to the adult standard. A child is judged against the conduct of a reasonable child of the same age, intelligence, and experience. A six-year-old who darts into a parking lot is not measured against a thirty-year-old's judgment.

Professionals are held to a higher standard within their specialty. A doctor is judged against the conduct of a competent doctor in the same field. A lawyer against a competent lawyer. An engineer against a competent engineer. The standard is whatever a qualified professional in that discipline would have done under the same circumstances — and proving the standard typically requires an expert witness from the same field.

Commercial drivers are held to the standard of a reasonable commercial driver, not an ordinary motorist. They know the federal regulations, the weight of their vehicle, and the stopping distances involved. A commercial truck driver who behaves like an average car driver is, by definition, falling below the standard for the job.

Common carriers — buses, trains, rideshare companies operating in transport mode — historically owe a heightened duty of care to their passengers. The yardstick tightens because passengers have entrusted their safety to the carrier.

The greater the responsibility, the higher the bar.

"I did not mean to" is not a defense in a Maryland negligence case. Negligence is about what a defendant did, or failed to do — not what they intended.

Not Every Accident Is Negligence

This part is uncomfortable, but it has to be said. Maryland law does not impose liability simply because something bad happened. Bad things happen all the time without anyone being legally at fault.

A deer runs into the road. A medical complication occurs that no qualified physician could have predicted. A patch of black ice forms minutes before someone walks across it, with no chance for anyone to discover it. A tire blows out on a vehicle that was properly maintained and inspected.

To win a Maryland personal injury case, the injured person has to prove a real failure of reasonable care — and prove that the failure caused the harm. The bar is not "something terrible happened." The bar is "someone fell below the standard, and that is why this happened."

This is why investigation matters so much. The earlier the facts get nailed down — what the defendant did or failed to do, what a reasonable person in their position would have done, what the connection is between the breach and the injury — the stronger the case becomes.

Why the Negligence Question Gets Asked Twice in Maryland

Maryland is one of only four states still using contributory negligence as a complete bar. (See Article 01 for the full picture on Maryland's 1% rule.) In every Maryland personal injury case, the negligence question is asked twice:

  • Was the defendant negligent? The plaintiff has to prove yes.
  • Was the plaintiff also negligent, even 1%? The defense will try to prove yes.

If the answer to the second question is yes, the case ends. The defendant walks. The injuries, the bills, the lost time — they stay with the injured family.

⚠ Every statement becomes evidence on question two The recorded call with the adjuster. The Facebook post about the recovery. The line in the ER record where the patient was guessing about speed. The text message sent to a friend the night of the crash. Every one of those becomes potential evidence the defense will use to argue the injured person was 1% at fault. Once that argument lands, the entire negligence analysis on the defendant becomes irrelevant.

What Actually Builds a Maryland Negligence Case

Three things, stacked together:

  • Witnesses who can say what actually happened — independent eyes are worth more than the parties' own accounts
  • Records — police reports, medical files, employment documentation, repair estimates, surveillance footage, body-cam video — that document both the conduct and the harm
  • Expert testimony where the case involves specialized knowledge: medical malpractice, trucking regulations, engineering failure analysis, building-code compliance, accident reconstruction

A Maryland negligence case is won by layering those proofs so the jury has multiple, consistent sources pointing the same direction. It is lost by gaps, contradictions, or a single piece of evidence the defense can use to argue the injured person was partly to blame.

The Bottom Line

Negligence is not "somebody messed up." It is the failure to use the care a reasonable, ordinary person would have used in the same situation — judged objectively, by a jury, against a defined yardstick that may shift depending on who the defendant is and what they were doing.

In Maryland, the test is unforgiving on both sides. The defendant has to be proved negligent. The injured person has to avoid being proved negligent. The case that wins is the one where the proof is documented, layered, and consistent — and where nothing the injured person has said, posted, or signed has handed the defense the 1% it needs.

That kind of case is built. It does not happen by accident.

This article is for general educational purposes only. It is not legal advice and does not create an attorney-client relationship. Maryland law changes, and every case turns on its own facts. If you or someone you love has been injured, speak with a Maryland personal injury attorney about your specific situation before making any decisions.

If you have been injured in Maryland, do not speak to the defendant's insurance company, their adjuster or attorney — it may jeopardize your case. Contact The Guerami Law Firm, LLC through CallAmir.com for a confidential consultation with Amir Guerami and his team.

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