NJ Transit says it has removed a driver after a rider recorded video of him masturbating behind the wheel of a moving bus.

The driver was transporting passengers through the Lincoln Tunnel on June 24 when he was observed engaging in the lewd behavior.

After the video was turned over to Weehawken Police, investigators arrested the driver, George L. Simpson Jr., 41, of Newark.

The criminal complaint against Simpson says he took his hand off the wheel and began masturbating inside the bus, "risking widespread injury."

John Durso Jr., a spokesman for NJ Transit, called Simpson's conduct "disturbing and grossly irresponsible."

“We offer our sincere apologies to anyone who may have witnessed this disturbing episode,” Durso said.

Simpson was taken off the job without pay.

Attempts to reach Simpson at home were unsuccessful.