Welcher spoke extensively about force, mass, and acceleration. He says damage to Read’s Lexus matches O’Keefe’s injuries.

Defense attorneys say the investigation was marred by incompetence. Experts say there are irregularities that could prove beneficial to Read.

Karen Read's defense attorneys will cross-examine key accident expert Judson Welcher about his analysis of John O'Keefe's ...

Dr. Judson Welcher said he believes the damage to Read’s SUV and relevant data was “consistent with a collision” with O’Keefe ...

Judson Welcher, a crash reconstructionist called by the prosecution, is back on the stand for a second day of testimony in the Karen Read trial.

Judson Welcher also testified earlier in the day that Read's SUV reversed at 74% throttle around the time she's alleged to have hit O'Keefe.

Judson Welcher, an accident reconstructionist from Aperture LLC, who is key to the prosecution's case, took the stand Tuesday ...

A contested accident reconstruction expert testified Tuesday, explaining a series of experiments and measurements that he ...

A crash reconstruction expert has provided jurors his analysis of Karen Read’s vehicle the night her boyfriend was killed in ...

As Karen Read’s second murder trial approaches its sixth week, an accident reconstruction expert took the stand at the Norfolk Superior Court in Massachusetts. According to The Boston Globe, Judge ...

Read's defense team could start calling its own witnesses very soon. Week six of testimony starts on Tuesday. It's unclear if ...

A Norfolk Superior Court judge this week dismissed some of the charges Aidan “Turtleboy” Kearney is facing relative to the ...