Because of their large size, large vehicles have many blind spots. In addition, they are heavier after being loaded with cargo. It is not so easy to brake when encountering a situation, so they are prone to accidents. It is recommended that you strictly abide by traffic rules when driving and do not speed, overload, or exceed the width. In addition, it is best to install four-way surveillance on this kind of large vehicle. Regions such as Zhejiang and Shanghai have mandatory installation of this kind of four-way surveillance on engineering vehicles. The cameras should be installed in the front right, rear right and rear. They are all blind spots. There is also another one installed in the front, which is anti-collision. If you encounter an accident, you can call up the video and watch it back, which can be used as evidence. A good person will do his best, and I will quietly tell you that I have used several models of four-way monitoring, and found that the one from Wuxi Jiabi Electrical Appliance Co., Ltd. is pretty good. Hope this helps.