The main reasons for frequent traffic accidents are as follows:
（1） Elements of the vehicle itself
1、超載嚴重。現在自動上料攪拌機運送車自動上料攪拌機筒容量一般為 8~12m3，但也有許多大方量的自動上料攪拌機車自動上料攪拌機筒容積可抵達 14~16m3，依照每立方混凝土拌合料的密度為 2400kg/m3來計，10m3的自動上料攪拌機車總重就可以抵達 35 噸左右，更大方量的自動上料攪拌機車其質量更大，這樣一來車的質量太大，在制動時慣性力非常大，制動間隔勢必要添加許多；
1. Overload is serious. At present, the capacity of automatic feeding mixer truck is generally 8-12m3, but there are also many large volume of automatic feeding mixer, the volume of automatic feeding mixer drum can reach 14-16m3. According to the density of each cubic concrete mixture is 2400kg/m3, the total weight of 10m3 automatic feeding mixer can reach about 35 tons, The mass of the more generous automatic feeding mixer locomotive is larger, so the quality of the vehicle is too large, the inertia force is very large when braking, so many brake interval potentials must be added;
2、自動上料攪拌機車質心高。路面上的自動上料攪拌機車，車身高度基本上在 3.85 米以上，車身高使得自動上料攪拌機車的整車質心比較高，在行進中容易發作側翻事端；
2. The mass center of the mixer truck is high. The height of the auto feeding mixer locomotive on the road is basically above 3.85 meters. The height of the vehicle makes the mass center of the automatic feeding mixing locomotive higher, and it is easy to turn over in the course of the road;
3. The blind area of vision is large. The control room of the vehicle is relatively high, and the front bumper, the right door and the rear of the vehicle are all blind areas of vision. For example, when pedestrians or non motor vehicles are in the blind area, it is easy to scratch when the automatic feeding mixer turns;
4. Seizure tendency. The automatic feeding mixer drum should be rotated continuously during the transportation, which causes the center of mass to shift to a certain interval, forming the wheel load of the left and right side of the automatic feeding mixer is different, and then the tendency force will occur.
（2） . controller
1. Lack of safety awareness. The lack of safety awareness of the controller is the main reason for the frequent occurrence of traffic incidents. Some drivers of the locomotive who automatically feed cement and stir, because of the indifferent concept of traffic law and poor safety awareness, neglect traffic safety, which leads to the incident;
2. Economic interest instigation. The salary of the driver of the automatic feeding and mixing locomotive is usually the base salary plus commission. The Commission is calculated according to the number of departure. Therefore, the driver is tired to drive, overspeed and even run the signal light for more money.
1. The standard of working rest every other day is not proper
現在許多水泥出產企業仍選用 24 小時的隔日作業準則，即作業 24 小時后歇息 24 小時。這種作業準則和企業本身運營特色，及水泥資料特色有關。大都水泥自動上料攪拌機站均處在城市市區周邊或城市市郊，許多城市規定在白日制止水泥自動上料攪拌機車在市區路途行進，因而許多工程需要在夜間施工。另外在酷熱夏日，夜間施工也有利于下降水泥的內部水化熱，推遲水泥內部溫峰呈現時間，對水泥裂縫操控有利。但是 24 小時的隔日作業準則，容易呈現司機疲憊駕馭；
Now many cement manufacturers still choose 24-hour working standard, namely 24 hours after operation, to rest 24 hours. This operation criterion is related to the operation characteristics of the enterprise itself and the characteristics of cement data. Most of the automatic cement feeding mixer stations are located in the urban area or suburb of the city. Many cities stipulate that the automatic cement feeding mixer locomotives should be stopped from moving along the urban road in the daytime, so many projects need to be constructed at night. In addition, in the hot summer, night construction is also conducive to reduce the hydration heat of cement, delay the time of temperature peak in cement, which is beneficial to cement crack control. But the 24-hour every other day operation rule is easy to show the driver fatigue control;
2. Seeking profit and neglecting safety
現在許多水泥自動上料攪拌機站為了尋求更大贏利，采納計件薪酬準則，一起自動上料攪拌機站的調度，還常選用衛星導航定位 GPS，對司機進行提示，敦促其趕快抵達施工現場，避免影響水泥功能，其實自動上料攪拌機車裝置 GPS 原意是為了時間監控車的行進車速，而自動上料攪拌機站辦理人員的做法便是辦理上存在了問題；
Nowadays, in order to seek more profit, many automatic loading mixer stations adopt piecework compensation criteria, and dispatch the automatic feeding mixer station. GPS is often used for navigation and positioning, prompting drivers to arrive at the construction site quickly to avoid affecting cement function. In fact, GPS of automatic feeding mixer locomotive is intended to monitor the vehicle speed, And the way of handling personnel in the automatic feeding mixer station is that there are problems in the handling;
3. Training for the controller is not in place
With the rapid development of the premixed concrete profession, many demands for the controller of the automatic concrete feeding mixer are added. The handling department and enterprise of the transport vehicle are not in place for the handling training of the controller, and there is no strict threshold and strict training for the new type of automatic concrete feeding mixer locomotive driver, which leads to the uneven nature of the controller, Most of the drivers did not understand their characteristics and went to the control position, or to control the concrete automatic feeding and mixing locomotive by the habit of other vehicles, which greatly added the probability of the occurrence of the automatic feeding mixer locomotive;
4. Neglect to rent vehicles
The price of the truck is not high, so many people choose to buy the method of rent for the cement enterprise. The rental car is paid by the owner. The automatic feeding mixer station shall settle with the owner according to the volume delivered by each vehicle, and other vehicles are irrelevant to the automatic feeding mixer station, so the safety handling of such vehicles has become a gap.