Metrolink officials accused the unidentified engineer of making three attempts to block the cameras' view. That engineer works for operating contractor, /*Connex Railroad*/ LLC.
Metrolink says another engineer allegedly clipped a paper to a visor another camera in March. He is still operating Metrolink trains pending the outcome of an investigation.
Attorneys for the /*Brotherhood of Locomotive Engineers and Trainmen*/ have argued that the cameras are creating a safety hazard, because sun visors have been reconfigured to carry the cameras.
The Associated Press and City News Service contributed to this report.