[Heel n Toe]

The school bus, which had dozens of children onboard, was barreling down a narrow and winding road Monday afternoon, according to an arrest affidavit.

"Mr. Walker lost control of the bus and swerved off of the roadway to the right, striking an elevated driveway and mailbox, swerved to the left and began to overturn, striking a telephone pole and a tree," the affidavit says.

Witness statements and physical evidence showed that Walker was traveling "at a high rate of speed, well above the posted speed limit of 30 mph," according to the affidavit.

http://www.cnn.com/2016/11/22/us/tennessee-chattanooga-school-bus-accident/index.html

My wife told me she heard he had been drinking, but I don't see anything about that in that article.