英语语法分析

Which isn't the main cause of traffic accidents according to Maxey?

根据麦克西警员的了解，下面哪个不是交通事故的主要原因？

Maxey, from the Ohio State Highway Patrol, knows the reality of speeding, drunk driving, and reckless driving.

俄亥俄州立公路巡警队警员麦克西对超速、酒后驾驶、莽撞驾驶的情况一清二楚。