Expert testimony is essential in many Maryland car accident cases. Under Maryland law, expert testimony may be admissible if the court rules that the expert testimony will help the trier of fact to understand the evidence or to decide a fact at issue in the case. Under Rule 5-702, a court must decide whether the witness is qualified as an expert based on the witness’s knowledge, experience, education, skill, or training, whether the expert testimony is appropriate, and whether there is a sufficient factual basis for the testimony.
Expert testimony is essential in cases where an issue is beyond the “common knowledge” of a layperson. One recent decision from a federal court of appeals shows a trial court’s improper exclusion of expert testimony doomed a plaintiff’s case, resulting in a judgment in favor of the defendants.
In that case, the plaintiff was hit by an SUV in a construction-affected area. The defendant, an architectural firm, was hired to redesign traffic in the area to safely control the traffic of vehicles and pedestrians in the area. A construction company installed a temporary concrete barrier along one part of the sidewalk. The pedestrian was crossing the street in the area and was hit head-on by a vehicle, rendering him a quadriplegic. The plaintiff filed suit against entities involved in the construction project, including the architectural firm.