ORLANDO, Fla. — The driver of a disabled Lynx bus was killed Friday morning when he was struck and killed by another Lynx bus that came up behind it, police say.

• 1 driver dead, other sent to hospital
• No passengers were on the buses at time of crash
• Get latest traffic updates on the Road Report

At about 5:10 a.m., the Orlando Police Department received calls about two Lynx buses that had crashed at West Princeton Street, east of the John Young Parkway, according to Lt. Diego Toruno. One Lynx bus had struck another bus in the back.

The driver of the disabled bus was hit while inspecting the back of his vehicle and was killed at the scene, according to Ismael Rivera, president of ATU Local 1596, the union president for Lynx drivers.

"The first bus died out, right there on the spot... The bus operator went to try and start the bus in the rear, and the second bus didn't see anybody and just rear-ended the bus," Rivera said.

"He was a newer bus operator, just a couple of years, but the other operator was a 25-year veteran," Rivera said.

Orlando Police identified the driver who was killed as 59-year-old Prosper Nazaire.

The veteran bus driver in the bus that came from behind was taken to Florida Hospital Orlando with minor injuries, police said.

Rivera says more needs to be done now to keep bus drivers safe.

"We shouldn't be in the back doing someone else's job, that's one. And the other is I think we need some protective vest if we're going to go outside of the bus and do something what we were asked to do, then we need better protection," he advised.

West Princeton Street was closed from Orange Blossom Trail to the John Young Parkway for several hours.

"Today, the Lynx family experienced an unimaginable tragedy. We are grieving one of our own as two of our buses were involved in an accident this morning killing one of our drivers. Lynx is cooperating with the Orlando Police Department during the ongoing investigation. We are providing grief counselors for all employees as we all grieve together," Lynx said in a released statement.

Rivera said more needs to be done now to keep bus drivers safe.

"We shouldn't be in the back doing someone else's job, that's one. And the other is, I think we need some protective vest if we're going to go outside of the bus and do something that we were asked to do, then we need better protection," he said.

There were no passengers on either of the buses at the time of the crash.

Police will continue to investigate the case, but no criminal charges appear likely, they said.