The main causes of large truck traffic accidents are human factors, vehicle factors, road factors, traffic environment factors, etc. The details are as follows:

First of all, it is the human factor. Illegal driving of large trucks is the main reason for frequent traffic accidents of large trucks. Because large trucks have absolute advantages in weight and volume, this has led to the psychological development of large truck drivers. Their sense of superiority drives them to act aggressively, often displaying aggressive driving behavior. In addition, large truck drivers are motivated by profit, make money on a piece-rate basis, and go fast. Therefore, illegal driving behaviors such as overloading, speeding, and running red lights are becoming more and more common and have become the main causes of traffic accidents with large trucks. In addition to large truck drivers driving illegally, it is also common for pedestrians and non-motorized cyclists to fail to obey the prescribed lanes, cross the road, and run red lights, resulting in frequent traffic accidents.

Secondly, there is the vehicle factor. Large trucks have the characteristics of long body, high center of gravity, difficult braking, and high visibility. These characteristics or defects of large trucks can also easily cause traffic accidents. Large trucks have blind spots when turning right. Because large trucks are long and high, when turning right, the driver looks at the rear right side through the rearview mirror of the left cab. , a visual blind spot often appears. Drivers without experience will not be considered. Blind spots are often prone to accidents. The main manifestation is that it is difficult to observe pedestrians and non-motorized vehicles crossing the road when turning right. Under normal circumstances, motor vehicles can turn right at a red light signal. The signal for motor vehicles to cross the road is usually green, and motor vehicles must give way to non-motor vehicles and pedestrians.

Again, it’s the road factor. Large trucks often exceed the weight, volume, and length of over-the-road trucks. So, the width of the road, the radius of the curve, the slope, etc. Design factors have a great impact on its safety. Drivers' inaccurate judgment of changes in shape and width of road lines can lead to operational errors. Causing traffic accidents, for example, improper turning in small-radius curves will cause accidents. Especially the lane width of urban roads is further compressed than the lane width of the entrance lane of narrow intersections on expressways. Some intersections are also compressed. From VI to I Sl The lane width is only 3 meters or even 2.8 meters. Large trucks can easily collide with vehicles in adjacent lanes.

Finally, there is the traffic environment factor. The urban road traffic environment is complex and the traffic flow composition is diverse. Severe mixed traffic flow, large speed differences, many intersections, dense buildings on both sides of the road, and complex traffic environment often lead to indirect and potential causes of large truck accidents.