My [XXX] son was at a stop light and when the light turned green he started to turn left. As he was turning left, the steering wheel started to pull left to the point that he couldn't steer it back, almost as if it was stuck and kept pulling left. He fought with it and tried to press the break. This caused him to hit the center median of the street ([XXX]) and the truck flipped and landed on driver side. My son took off his seatbelt and climbed out of passenger window. Another person that helped him told him that they saw him struggle with the steering wheel. However, since my son is [XXX], he didn't know to gather witness information. A police report was completed and I'm waiting to receive it. However, he was not cited as he was not speeding and had only simply turned left at the signal. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)