Passengers say the wreck occurred when the bus tried to pass the 18-wheeler. Police say the bus driver noticed something strange with the bus and lost control, slamming into the rear of the semi.
KPRC2 reports that seven people were hospitalized following the crash, but the worst of the injuries were broken bones. The force of the crash mangled the passenger bus, smashing the front end and forcing passengers to evacuate out emergency windows.
The Houston-based bus was on a 750-mile trip to San Luis Potosi, Mexico, before the accident occurred.
According to the National Highway Traffic Safety Administration (NHTSA), 3,903 people were killed in crashes involving large trucks in 2014. Here is some additional information on 18-wheeler accidents: