A common cause of T-bone accidents is when one driver makes a left turn at an intersection, believing the oncoming car will stop at a traffic light. One driver might run a red light, causing the other driver to crash into them. Some T-bone crashes are caused when one driver runs a stop sign. Distraction causes any type of car accident. T-bone accidents occur in parking lots when the driver backing out fails to see a car behind them—however, these low-speed accidents result in less severe injuries.