Design method of length from left turn U-turn intersection to stop line based on traffic wave theory
A design method and stop line technology, applied to roads, buildings, complex mathematical operations, etc., can solve problems such as unreasonable setting of left-turn turns, achieve the effects of reducing impact, avoiding diversion conflicts, and improving service levels
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Embodiment 1
[0047] A design method for the length of the left-turn U-turn lane to the stop line based on the traffic wave theory, including the following steps:
[0048] (1) Traffic data measurement:
[0049] 200 meters upstream of the intersection entrance road is the survey point of the normal driving speed of left-turning vehicles and the traffic volume during peak hours. Three vehicles start, record the average headway time when the vehicle reaches the stop line as the headway time when the vehicle starts.
[0050] At first, at the intersection, there are 200 meters at the location speed survey point to investigate the vehicle's location speed, and record; then, take 10 minutes as a time interval to continuously investigate the peak hour traffic volume of large, medium and small cars passing through this point; Then, the headway survey point investigates the average headway and the vehicle speed when the vehicle passes the stop line in multiple cycles; finally, observe the signal lig...
Embodiment 2
[0072] Take the intersection of Chengde Road and Mingyuan Road in Huai'an City as an example. There is a left-turn lane in the north-south direction of the intersection, and there is no special U-turn lane. According to the literature, the length of the U-turn lane is generally 10 meters. The movement of vehicles is controlled by signal lights. The U-turn of the vehicle is easily affected by other vehicles and pedestrians.
[0073] A method for designing the length of a left-turn U-turn from a stop line based on traffic wave theory, comprising the following steps:
[0074] (1) Traffic data measurement:
[0075] 200 meters upstream of the intersection entrance road is the speed of left-turning vehicles and the survey point of traffic volume during peak hours. Before the intersection stop line is the survey point of headway distance of left-turning vehicles and the speed of vehicles passing through the stop line. Three vehicles start, and the average headway when the vehicle a...
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