【正文】 the scenario is open in that there are no obstacles on either side. Meanwhile, the field has good climate and normal traffic conditions, that is to say, no fog, no rain, no snow weather and dry flat pavement conditions. The static scenario design of experiment is shown in Figure 1 Dynamic scenarios help In accordance with highway standards in China, specific section with overtaking sight distance in appropriate distance should be set on a twolane highway based on need and 河南理工大學(xué)萬方科技學(xué)院本科畢業(yè)設(shè)計 5 terrain. Pie and Wang (2020) have stated the length of the section should not less than 10%30% of the total length of the route in normal circumstances. In dynamic scenarios, the experimental vehicles must drive according to predetermined routes and speeds. When the leading vehicle which the driver maneuvered reached a specific place, the other experimental vehicles will be triggered to start movement. These places are triggering points. The setting of dynamic parameters of experimental vehicles during overtaking process was explained as follows. Figure 1. Design of static scenario Figure 2 is the dynamic scenario distribution of the overtaking process. Car0 is the leading car, and Car1 is the passed car, and Cars 2, 3, 4, 5 are oning cars. In order to increase driving realism and prevent the driver from overtaking ahead of time, set front Car6 and 7 ahead of Car 2,3,4,5. The setting of dynamic parameters includes starting area, speed, driving track, and space of vehicles. Once Car0 reached the trigger point, all other vehicles will begin to move at the set speeds and tracks. The space of vehicles in the dynamic scenario Sn_n+1 means the distance between Carn and Carn+1 when the main Car0 reached the trigger point. This distance is the most difficult to determine, but we can set it based on the prescribed value of overtaking sight distance Since the time headway is a time interval when the bumpers of two traveling cars pass the same transect on a road section, it mainly depends on the distance between the two cars and the speed of the following car (Olsten, 2020). Observed in the static condition, time headway 河南理工大學(xué)萬方科技學(xué)院本科畢業(yè)設(shè)計 6 (called H) can be directly obtained by measuring the moment when the two vehicles pass through the same transect. H=TBTF (1) Where, TB——The time when the leading car passes through the detector(s). TF——The time when the following car passes through the detector(s). In a dynamic overtaking process, the time headway is the quotient of the headway between two cars and the speed of the following car, namely: fDH V?? (2) Where, D——Headway of leadingandfollowing car (m) Vf——the speed of the following car (km/h) Liu (2020) found that, in a mountainous area twolane secondary highway, when the headway time of the leading and following cars is below and the speed difference between the two cars reached about 20 km/h, a demand to overtake is generated(). In this experiment the headway time was set at 3s. In addition, in order to make front cars driving on the road seem more real, we let the Car1 trigger in Figure3 is the experimental dynamic scenario after loaded traffic flow. Speed of passing vehicle (km/h) 80 60 50 40 Speed of passed vehicle (km/h) 60 45 30 S01(m) 100 75 50 S12(m) 667 263 S23(m) 527 338 245 198 S34(m) 537 349 355 208 S45(m) 547 369 365 318 河南理工大學(xué)萬方科技學(xué)院本科畢業(yè)設(shè)計 7 advance, that is taking S01 = 2D. Sn_n+1 value in different speed limit sections were shown in Table 1. Figure 3. Dynamic overtaking scenarios in KMRTS Measurements Overtaking Behavior Measurement The subjects were required to drive in the KMRTS in order to determine the driver subjects’ overtaking behavior. Every subject finished four tests in the scenarios. There are 48 different overtaking behavior measurements. When they drove, they should increase their speed as close to the speed limit according to limit speed signs in the simulated scenarios (including 40,50,60,0KM/H, a total of four speeds), and then plete an overtaking maneuver in each section according to their personal experience and ability. But once they pleted an overtaking maneuver and on turning sections, there was no limitation on speed. During the experiment, the drivers’ operation behavior, driving speed, acceleration, overtaking time, distances traveled, distance between the overtake car and oning cars before and after overtaking were recorded. All these data were used to evaluate the drivers39。 Desmond, and Matthews, 1997。 Rong, et al., 2020。 Geertje, et al., 2020。 ABSTRACT Safety study of driving behaviors to reduce traffic accidents is of great significance. The primary objectives of the study were to investigate the relation between driver overtaking behaviors and traffic safety. Twelve drivers of different proficiency were selected for an experiment on a driving simulation system platform. A simulation scene of overtaking on a twolane highway was set up. The subjects overtook in the virtual scenarios at different speeds. A total of twelve parameters including speed, acceleration, time of overtaking process, the changes of distance and other parameters were extracted during the experiments. These data together with the results of a DBQ (Driving Behavior Questionnaire) were analyzed and evaluated by the multiple linear regression method. The results showed that three motion parameters had a strong correlation with drivers39。河南理工大學(xué)萬方科技學(xué)院本科畢業(yè)設(shè)計 1 附錄： Safety Assessment of Driver Overtaking Behavior on TwoLane Highways Yaqin QIN1, Jian XIONG1, Xiujuan ZHU1, and Jianshi LI1 Faculty of Transportation Engineering， Kunming University of Science and Technology (KUST), Kunming, Yunnan 650224, China。 PH (86) 08713802298。 safety. Finally, the study presents a linear model of safety assessment of dri