**50 words:**
Moving radar is admissible without expert testimony, just like stationary radar, since both rely on the same science. But because moving radar has more ways to err, *People v. Knight* requires prosecutors to prove more: a properly calibrated unit, a qualified operator, independent verification of the patrol car's own speed, and low-distortion conditions.
When a radar reading was the only evidence, a Westchester County Court reversed a speeding conviction in People ex rel. McCann v. Martirano. A single, unverified tuning-fork test wasn't clear and convincing proof of accuracy — the fork itself could have been off, potentially masking an inaccurate radar unit reading the same wrong number.
The Appellate Term rejected Douglas Gonzalez's argument that a driver's sincere belief a lane change is unsafe should excuse a Move Over Act violation, explicitly adopting Krahforst's objective-standard reasoning as controlling. With the trooper testifying Gonzalez had "ample" opportunity and no obstructing traffic, the court affirmed — cementing the objective standard as binding appellate authority, not just persuasive precedent.
People v. Lampman (2017) finally spelled out radar's foundation requirement: officer training on that device, certification, timely testing, and testimony linking a positive test result to actual accuracy. A trooper's testimony that he "pressed a button and got a positive indicator" fell short — and since he never formed a visual estimate either, the court found Briana Lampman not guilty.
Can an untested radar lead to a speeding conviction? In People v. Dusing, the New York Court of Appeals established that while an untested radar or speedometer reading is admissible, it cannot support a conviction on its own. However, prosecutors can bridge this evidentiary gap by combining the untested device reading with sworn visual speed estimates from qualified police officers.
In this 2016 case of first impression, Cohoes City Court held that New York's Move Over Act judges "due care" by what a reasonably prudent driver would do — not the driver's subjective belief. Jacqueline Krahforst claimed she didn't feel safe merging; the court found she had room, never signaled, and that her obstructed view didn't excuse failing to see the police cars.
Can you be convicted of speeding without radar or LIDAR? Under New York law, a qualified officer's visual speed estimate alone can be legally sufficient to sustain a speeding conviction—especially when the alleged speed is significantly higher than the posted limit, as established in People v. Olsen.
VTL § 1144-a, the Ambrose-Searles Move Over Act, requires drivers to move over (or slow down if unsafe) for stopped emergency, hazard, and disabled vehicles — now including any vehicle on a parkway shoulder as of 2024. Courts apply an objective "reasonably prudent driver" standard, not the driver's subjective belief. Penalties run $150–$450 across three tiers, plus surcharges and three DMV points per conviction as of February 2026.
Can radar evidence alone secure a speeding conviction? In People v. Magri, the New York Court of Appeals established judicial notice of radar's scientific reliability, ruling expert testimony unnecessary to explain the technology. However, the court held that an untested radar reading cannot sustain a conviction on its own—it requires corroboration by a qualified officer's visual speed estimates to satisfy the legal burden of proof.
The Appellate Term affirmed Move Over Act conviction, rejecting arguments that fatigue, darkness, and wet roads excused failing to change lanes for a stopped trooper. The court held those conditions didn't reasonably prevent a safe lane change, and that slowing down — his actual response — is not an acceptable substitute for the statute's specific requirement to move over.