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Method for setting time control point in bus scheduling
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A technology of time control and bus lines, applied in the traffic control system of road vehicles, traffic control systems, instruments, etc., can solve the problems of unable to generate time control point setting schemes, reduce the punctuality rate and operating efficiency of bus vehicles, and achieve reduction Total operating time, reduced parking waiting time, and improved operating efficiency
Active Publication Date: 2017-07-21
HARBIN INST OF TECH
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[0005] The purpose of the invention is to solve the problem that the existing time control point setting does not consider the impact of the time control point setting on the punctuality rate of public transport vehicles and the total running time of the bus on the line, which cannot generate the best time control point setting scheme, seriously reducing In view of the shortcomings of bus punctuality and operating efficiency, a method for setting time control points in bus scheduling is proposed
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specific Embodiment approach 1
[0014] Specific implementation mode one: the time control point setting method in the bus line vehicle scheduling of the present embodiment, such as figure 1 shown, including the following steps:
[0015] Step 1: Determine the total number of time control points of a bus line.
[0016] Step 2: Set the starting station and terminal station of the bus line as time control points.
[0017] Step 3, according to the total number of time control points and the number of stops of the bus line, generate one alternative scheme of time control points.
[0018] Step 4. For the i-th time alternative, calculate the sum of the average value of the variance of the travel time of all buses between all adjacent time control points in the given operating period of the last 10 consecutive working days, and calculate the result It is called the evaluation index of the i-th time alternative. The operating time period can be the morningrush hour and other periods.
[0019] An embodiment of the...
specific Embodiment approach 2
[0022] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is:
[0023] In step 1, the total number of time control points N is calculated by the following formula:
[0024]
[0025] Among them, floor[·] is the function of rounding down; M is the number of bus stops; a is an intermediate variable. 20% in the formula can also be replaced with other values according to actual needs.
[0026] Other steps and parameters are the same as those in Embodiment 1.
specific Embodiment approach 3
[0027] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is:
[0028] In step 3, the number of types I of the time control point alternatives is determined by the following formula:
[0029]
[0030] Where: C is the combination number in mathematics; and
[0031]
[0032] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.
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Abstract
The invention relates to a method for setting time control points in bus scheduling, and belongs to the field of bus scheduling. In order to iron out the defects that a conventional time control point setting method does not give consideration to the impact on the buspunctuality rate and the total operation time of a bus on a route from a time control point and severely reduces the bus punctuality rate and operation efficiency, the invention proposes the method for setting the time control points in bus scheduling. The method comprises the steps: determining the total number of time control points of a bus route; setting a departure stop and a terminal stop as the time control points; generating I types of alternative time control points; calculating the sum of mean values of travel time variance of all buses between the adjacent time control points in a given operation time period in the nearest continuous 10 work days for an i-th time alternative scheme; searching an evaluation index with the minimum value, and selecting the corresponding time control point as the time control point in the given operation time period. The method is suitable for the scheduling strategy of the bus route.
Description
technical field [0001] The invention relates to a method for setting time control points in vehicle scheduling of public transport lines, belonging to the field of vehicle scheduling of public transport lines. Background technique [0002] Prioritizing the development of public transport is an important measure to alleviate urban traffic congestion. A reasonable vehicle scheduling scheme for bus lines is of great significance to improving the punctuality and service level of bus vehicles, and is the key to improving the attractiveness of bus travel. The vehicle dispatching scheme of bus lines generally includes three links: time control point setting, departure frequency determination, and timetable formulation. The setting of time control points refers to selecting several important stations from various stops of the bus line, and the establishment of timetable is to determine the departure time (departure time) of the bus at each time control point. Therefore, the settin...
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