If you believe the speed on your Maryland citation is wrong, “I wasn’t going that fast” is not by itself a defense. What works is challenging the evidence: how the speed was measured, whether the equipment was properly calibrated, whether the officer was certified to operate it, and whether the conditions allowed for an accurate measurement. The honest path is examining the proof — radar tuning fork tests, LIDAR calibration records, officer certification status, line-of-sight conditions — not denying the result without supporting facts.
Speed perception is genuinely unreliable. Drivers can misjudge their own speed by 5 to 10 mph routinely, especially in light traffic or on familiar roads. Just as often, officers and their equipment can produce readings that do not match reality. The question for a Maryland speeding case is not who feels right. The question is what the evidence actually shows.
Why “I Wasn’t Going That Fast” Alone Doesn’t Work
Maryland District Court judges hear “I wasn’t going that fast” from drivers on a daily basis. Without supporting facts, the argument is a denial — and denials do not move judges. The State produces the officer, the citation, and (usually) testimony about how the speed was measured. The driver’s recollection that they were going slower is rarely persuasive against that evidence, regardless of how confident the driver feels.
The realistic version of this defense is not “the officer was wrong” but “the State cannot prove the alleged speed beyond what the law requires.” That second framing turns the argument from a denial into an evidentiary challenge — and evidentiary challenges are how Maryland speeding cases are actually won or reduced.
The Three Ways Maryland Officers Measure Speed
Every Maryland speed enforcement case relies on one of three measurement methods. Each one has known weaknesses that a defense can examine.
Radar uses microwave signals to measure speed by Doppler shift. The unit must be tested with calibrated tuning forks before and after the shift. The officer must be certified to operate it. The reading can be affected by other moving objects in the radar beam, multiple targets at varying distances, and electrical interference from sources like power lines or other radar units. See how radar speeding tickets work in Maryland for the full mechanics.
LIDAR uses a narrow infrared laser beam. It is more precise than radar at isolating a single vehicle, but requires steady aim, proper alignment, and accurate calibration. Weather (rain, fog) degrades LIDAR accuracy. Improper aim points produce inaccurate readings. See how LIDAR speeding tickets work in Maryland.
Pacing means the officer matches the suspect vehicle’s speed for a sustained period and reads the patrol car’s speedometer. It requires accurate speedometer calibration, consistent following distance, no intervening vehicles, and a pacing distance long enough to produce a reliable result. Pacing is often the weakest of the three because real-world traffic frequently disrupts at least one of these requirements. See how pacing speeding tickets work in Maryland.
What Evidence Can Challenge a Speed Reading
An evidentiary challenge to a Maryland speed reading is built on documents and records — not on the driver’s recollection of how fast they were going.
Calibration Logs and Tuning Fork Tests
Radar units in Maryland are required to be tested with calibrated tuning forks at the beginning and end of each shift. The tuning forks themselves must be periodically recertified. If the calibration logs are missing, incomplete, or show inconsistencies, the radar reading becomes more vulnerable to challenge. Defense counsel can request the calibration records as part of discovery.
Officer Certification Records
Officers must complete radar or LIDAR operator training and maintain current certification. If the officer’s certification was expired at the time of the stop, or if the training was inadequate for the technology used, the resulting reading can be challenged. Certification records are also obtainable through discovery requests.
Line-of-Sight and Positioning Evidence
Where the officer was positioned during the measurement matters. A stationary radar measurement from behind a curve, from a hill, or from inside vegetation can be challenged on visibility and angle grounds. Doppler radar accuracy decreases when the radar beam is at a sharp angle to the target vehicle’s direction of travel — a phenomenon called “cosine error” that produces slightly low readings, generally favorable to the driver. But the inverse can happen with certain configurations.
The Officer’s Actual Observations
The officer’s report or notes about how the target was tracked matter. A thin description, an unclear tracking history, or a long gap between measurement and stop all create opportunities for cross-examination. If the officer cannot specifically recall the measurement details — which is common for a routine stop weeks or months earlier — the testimony becomes more vulnerable.
When the Alleged Speed Crosses the Kepp Act Threshold
The most important version of this question is when the alleged speed is in the 28 to 32 mph over range. Under the Sergeant Patrick Kepp Act, effective October 1, 2025, driving 30 mph or more over the posted limit triggers reckless driving under Md. Code, Transp. § 21-901.1(a) — must-appear, criminal, up to 60 days in jail. The difference between an alleged speed of 28 mph over (high-tier speeding, 2 points) and 30 mph over (reckless, 6 points, criminal) is enormous.
If your case is in this borderline range, even a small challenge to the speed reading can matter substantially. A successful challenge that knocks the alleged speed below 30 mph over removes the reckless charge entirely. See our guides to jail exposure for reckless driving in Maryland and the difference between reckless and aggressive driving for what’s at stake.
Why Drivers Genuinely Feel They Weren’t Going That Fast
Speed perception is influenced by several factors that have nothing to do with the actual speedometer reading.
- Modern cars are quieter and smoother than older vehicles. A driver going 75 mph feels less of the speed than the same driver did a decade ago in a different car;
- Familiar roads feel slower than unfamiliar ones. Drivers who travel the same route daily underestimate their speed because the road context feels routine;
- Light traffic feels slower than heavy traffic at the same actual speed. Adjacent moving vehicles create a sense of motion that isolated travel does not;
- Wide highways feel slower than narrow ones; long straight stretches feel slower than curved ones; and
- Downhill grades produce real speed increases that drivers often do not notice.
The point is not that drivers are lying when they say they were not going that fast. The point is that the driver’s feeling is not strong evidence against a calibrated measurement. The court is going to weigh documented measurement against personal recollection — and documented measurement almost always wins unless the documentation itself has problems.
Realistic Outcomes from a Speed Challenge
When the evidence genuinely supports a speed challenge, the most common outcomes are charge reduction or Probation Before Judgment, not dismissal. Dismissal can happen when the calibration records are missing or the officer’s certification was lapsed at the time of the stop — but those are uncommon.
More typically, raising legitimate questions about the speed reading creates leverage for negotiation. The prosecutor may agree to reduce a 20 mph over speeding ticket (2 points, $290 fine) to a 9 mph over violation (1 point, lower fine). A PBJ becomes more accessible when the State recognizes the reading might not hold up under full cross-examination. For broader context, see can you fight a Maryland speeding ticket in court.
What NOT to Do
Three approaches consistently fail in Maryland speeding cases.
First, walking into court and telling the judge “I wasn’t going that fast” without supporting evidence. The judge has heard that exact argument hundreds of times.
Second, arguing with the officer at the roadside about the speed. This rarely changes the outcome of the stop and often makes the case harder later — officers can document the driver’s demeanor and behavior, and an argumentative driver gives the State material to use at sentencing.
Third, paying the ticket because it “seemed too high to fight.” Paying the ticket is a conviction. The points stay on your record. The insurance increase follows. If the reading was genuinely questionable, paying without challenging it forfeits the opportunity to address it.
Related Questions
- “The officer stopped the wrong car” — identification defenses in Maryland speeding cases — When mistaken-identity defenses work.
- Is “going with the flow of traffic” a defense to a Maryland speeding ticket? — Why this argument fails and what actually matters.
- Can you fight a Maryland speeding ticket in court? — Full defense framework.
- Why it’s so hard to beat a Maryland speeding ticket — Honest take on dismissal odds.
- Maryland traffic ticket defenses that don’t work — Arguments to avoid.
Bring the Records, Not Just the Doubt
If you genuinely believe the speed on your Maryland citation is wrong, the path forward is examining the actual evidence: calibration logs, officer certification, line of sight, and measurement conditions. A Maryland speeding ticket lawyer can pull the relevant records, evaluate whether the speed reading is genuinely vulnerable, and identify whether a charge reduction, Probation Before Judgment, or full dismissal is realistic in your case.
Toll-free: 1-877-566-2408. For the broader picture, see the complete Maryland speeding, reckless, and aggressive driving guide.
Last updated: May 26, 2026.