It happened on the Eastex Freeway near the East Freeway around 9:30pm Monday.
Police say a Ford F-450 belonging to METRO and an older-model white Cadillac collided head-on.
The two people who survived this accident are METRO employees. They are out of the hospital and recovering at home. They've been identified for us as Raphael Tran and Thao Phan.
Officials with METRO say the two are service workers. They're cleaners and they change tires for METRO buses.
They were returning to their home base from a service call when the accident happened.
Witnesses told police they saw the Cadillac heading the wrong way on U.S. 59 near Lyons. It collided with the METRO truck, clipping the left front fender.
The driver of the Cadillac died on impact. He has been identified as Bobby Harris, 43, of Houston.
We still don't know how or why that Cadillac ended up going the wrong way. We do know Harris was a First Transit employee since 2005 and in good standing. First Transit operates a garage for METRO.
The collision happened in the left emergency lane. Reports from witnesses indicate the driver of the Cadillac was repeatedly bumping the shoulder before it struck METRO's utility truck.
METRO tells us the driver of the Cadillac did not know Tran or Phan. The cause of the accident is still under investigation.