People pay more and more attention to the traffic safety of Bai Expressway. There are many factors that affect highway traffic safety, but in the final analysis, it is nothing more than people, vehicles, roads and pipes. The following mainly analyzes many factors that affect highway traffic safety from these aspects. The significance of expressway traffic safety Expressway has the characteristics of high speed and large capacity. But it is precisely because of these characteristics that accidents on expressways are different from ordinary highways. Because the expressway is a fully enclosed expressway with good road conditions and complete signs, traffic accidents are greatly reduced compared with ordinary expressways. However, due to the high speed on the expressway, once an accident occurs, its disaster degree is seriously amplified, which leads to a great increase in the accident mortality rate of the expressway, far exceeding that of ordinary highways. Therefore, we must firmly establish the consciousness of "safety first", deeply understand and understand the causes of traffic accidents, and take corresponding measures to effectively prevent and avoid traffic accidents to the maximum extent. Completely reliable driving conditions. Perfect safety management is a powerful guarantee for driving safety. Next, we will analyze them one by one: this section is particularly prominent. In addition, the stability, smoothness and skid resistance of pavement are also the reasons that affect the safe driving of expressway. Due to the high speed of expressway, a pebble on the pavement or the damage of pavement structure may lead to major traffic accidents. The influence of drivers' artificial driving Because the expressway is a fully enclosed interchange with good road conditions, drivers do not need to take many measures during driving, which leads to the decrease of drivers' vigilance and problems, and accidents often occur due to untimely response. In addition, drivers' fatigue driving for a long time, as well as drivers' weak awareness of traffic safety laws and regulations, drunk driving, speeding and overtaking in violation of regulations are all causes of traffic accidents. The influence of expressway safety management is perfect, and good safety management is a powerful guarantee for driving safety. If safety management is not in place, traffic accidents will easily occur. If traffic control is not taken in time under bad weather conditions, it is easy to cause a series of rear-end accidents due to fog, rain and snow, resulting in mass casualties. In addition, the problem of overload is serious. Overloaded vehicles running on the road will not only destroy the permanent bearing capacity of the road, but also easily cause inertia erosion or brake failure due to excessive loading of goods when the overloaded vehicles suddenly brake in danger, thus causing accidents. The influence of the vehicle's own performance, the vehicle runs at a high speed on the expressway, so it is required that the vehicle must have good performance. Flat tire is the influencing factor of expressway traffic safety. Highway traffic safety is a systematic problem, in which human factors are very important, and accidents on highways are all caused by human factors, accounting for 95%. The performance of the car itself, such as the braking performance during driving, also has a great influence on traffic safety. Highway belongs to the infrastructure of the whole traffic system and is an important factor of traffic safety. Good road geometric alignment, smooth and solid pavement structure, clear and easy-to-understand traffic signs and reasonable and effective protective measures can provide drivers with one of the most common causes of accidents, and others include motor failure and brake failure. The influence of highway pavement structure plays an extremely important role in traffic safety. For example, long straight road sections are easy to make drivers tired because of monotonous landscape, which leads to distraction and slow response. In case of emergency, accidents often occur due to inadequate measures; The superelevation curve and insufficient radius often lead to vehicle overturning; Unreasonable longitudinal slope design leads to the mixing of vehicles with obviously different climbing abilities, which can easily lead to traffic accidents. In some mountainous and hilly areas, the effective prevention of traffic safety influencing factors of local expressways is to strengthen traffic safety education and improve the quality of drivers. According to the driving characteristics of the expressway, the driver should be given safety education, so that the driver can understand the difference between the expressway and the general highway and the matters needing attention in the expressway driving, such as checking the vehicle before driving, keeping the vehicle in good condition, making a reasonable driving plan, not driving fatigue, not speeding, etc. Followed by charging132transworld2010no. 16 (August) t Traffic Engineering Traffic Engineering Expressway Traffic Engineering Facilities Inspection Text/Su Liangfeng With the large-scale construction of expressways in China, people pay more and more attention to the inspection of traffic engineering facilities. The systematic research on traffic engineering facilities in China began in the 1980s. On the basis of the national key scientific and technological project "Research on Highway Traffic Safety Facilities" during the Seventh Five-Year Plan, the Ministry of Communications issued and implemented the Technical Specification for Design and Construction of Highway Traffic Safety Facilities on 1994. On this basis, the inspection of communication engineering facilities has gradually started and developed. The traffic engineering facilities in the expressway include traffic safety facilities and traffic electromechanical facilities. At present, the unit inspection scope of most expressway traffic projects in China mainly focuses on traffic safety facilities, such as safety guardrail, isolation guardrail, marking, road marking paint, traffic signs, reflective film, sudden road signs, anti-glare facilities, road lighting facilities, anti-collision buffer facilities and so on. However, only a few units, such as the Traffic Engineering Quality Inspection Center of the Ministry of Transport, can carry out the inspection and measurement of traffic electromechanical products, such as communication pipes, emergency telephones, variable information signs, vehicle detectors, variable information signs, video monitoring equipment, electric hurdles, manual hurdles, toll displays, lane controllers, ic card readers, etc. This paper analyzes the emergence, development, present situation and existing problems of this detection field, and looks forward to the future development of this detection field. Expressway construction has mushroomed in China, which has given wings to the rapid development of the national economy. At the same time, it puts forward new and higher requirements for highway engineering inspection, especially for the inspection of highway traffic engineering facilities, which is gradually valued and developed with the large-scale construction of highways. Because it started late and involved many subjects, how to evaluate the quality of traffic engineering facilities accurately and quickly has become an important challenge for highway engineering inspectors in the new century. Characteristics of traffic engineering facilities inspection: Traffic engineering facilities inspection personnel need to have solid basic inspection theory and skilled inspection operation technology. Rich basic knowledge of highway engineering and related disciplines and deep understanding and mastery of norms and standards. It is an effective measure to prevent traffic accidents by using all kinds of propaganda media accurately and quickly and popularizing traffic safety knowledge and highway use knowledge through experiments and tests. Then, continue to improve the construction of traffic laws and regulations, so that highway traffic safety can be "governed by laws", resolutely crack down on traffic violations such as speeding and overloading, and adopt the principle of combining strict law enforcement with strengthening education, so that violators can not only get due punishment, but also learn from them, improve their ideological understanding and avoid further accidents. In the design of expressway road structure, factors such as highway service function, traffic safety and natural environment must be comprehensively considered, and the route selection should not only adhere to topographic route selection and geological route selection, but also be safe. It is necessary to give full consideration to the safety and operational safety of highway facilities, and eliminate highway accident-prone points and potential safety hazards. Measures should be taken to improve the horizontal and vertical alignment as far as possible to fundamentally solve traffic safety problems, especially on long steep slopes. According to the basic requirements of highway geometric alignment design, when determining highway geometric alignment, we should not only meet the requirements of standards and specifications, but also comprehensively consider the influence of downhill vehicles' driving sight distance, overtaking distance and safe braking distance. Therefore, when designing the horizontal curve alignment, we should not only keep the alignment continuity in combination with the terrain, but also ensure a certain turning radius. When going downhill continuously, because the speed is getting faster and faster and it is unsafe, it is necessary to control the slope length. In complex situations, such as intersections, interchange ramps, lane changes, traffic signs and other facilities, the judgment time should be increased when the response time is taken in the sight distance design, and the judgment time should be longer than 2.5S Eye-catching signs should be set up in accident-prone areas with poor linear shape to remind drivers to pay attention to eliminating potential safety hazards. In the aspect of expressway safety management, it is necessary to strengthen the joint disposal between departments, formulate various perfect emergency plans, such as strengthening the approval and management of dangerous goods transport vehicles driving on the road, and implementing traffic control and diversion measures in time to effectively avoid traffic accidents. Strengthen the rectification of overloaded vehicles to curb the damage of overloaded vehicles to expressways. Strengthen highway maintenance, eliminate potential safety hazards, prevent traffic accidents, and maintain highway safety and smoothness.