| With the sustained and rapid economic development, the road traffic grows rapidly, a lot of four-lane highway which is built completion in the early year has gradual emerged serious traffic congestion and expansion of them has become eight-lane highway. Vehicles in eight-lane highway are running significantly faster, the number of them is increased greatly, the degree of freedom of the driver change lanes is significant increase while the number of accidents also increased, especially export accident rate is higher than four-lane, six-lane’s. The reason of these is the high-speed exit safety not perfect. Clear signs and markings can release driver psychological pressure, lead traffic flow, provide road information, guide the direction of action. So it’s important to set a reasonable classification marking in high-speed exit.This paper presents an innovative color classification markings, define the color classification markings, explain the meaning of setting it and principle of classification settings. Then determine factors that influence the length of the classification markings on the basis of analysis high-speed exit traffic flow characteristics and driving behavior. We divide the color classification marking into the preparation phase, phase change lanes and safe stage and determine the part of the calculation indices.Next, marking the length of each part of the calculation process, we use traffic flow, headway distribution to compute preparatory stage length; calculating the length of the car changed channel is a herein focus on the calculation process, the researchers introduced game theory, the calculation of game benefits from two game parties divided into psychological benefits, security income and time gains. For psychological benefits, security income study we introduce the concept of field to quantify, next define the total revenue obtained by the game to get game strategies and length of change lanes, then calculate the length of color classification markings. Further, according to the driver’s lane changing urgency to determine each internal marking color length.Finally, we use the number of collisions, average delay time and queue length as indicators to verify setting grade colored markings in the high-speed export are better than not set grade colored markings in VISSIM. |
