As per a MyFoxHouston.com story:
An accordion style METRO bus was involved in a major wreck on 288 South near Old Spanish Trail on Thursday morning. The driver died in the crash, and traffic was slow in the area.
The crash happened just after 8:30 a.m.
Aerial views from SkyFox show that the bus’s two parts separated in the crash. The bus also appears to have hit an overpass support pillar. Several emergency vehicles are on the scene.