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A Calculation Method of Travel Reserved Time Based on Road Network Travel Time Reliability

A travel time and reservation time technology, applied in the field of travel reservation time calculation, can solve problems such as reducing the reliability of the transportation system and travel uncertainty

Active Publication Date: 2019-11-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the operation of the urban road traffic system, it is often disturbed by random factors, such as frequent traffic accidents, temporary road maintenance and traffic control, sudden natural disasters (earthquakes, floods, bad weather), etc. It brings uncertainty, greatly reduces the reliability of the transportation system operation, and has a negative impact on the performance of urban transportation functions and urban development.

Method used

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  • A Calculation Method of Travel Reserved Time Based on Road Network Travel Time Reliability
  • A Calculation Method of Travel Reserved Time Based on Road Network Travel Time Reliability
  • A Calculation Method of Travel Reserved Time Based on Road Network Travel Time Reliability

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Embodiment 1

[0023] Taking the urban expressway from south to north on the Shangtang-Zhonghe Elevated Highway in Hangzhou City as an example, from the ramp on Wangjiang Road to the off ramp of Dengyun Road, there is a section with a length of 7.7km.

[0024] (1) Obtain the travel distance and travel time between the starting and ending points of the vehicle through the bayonet detectors arranged at the upper and lower ramps.

[0025] (2) Calculate the travel time rate of a single path, where: t k is the travel time of the kth car, d k is the travel distance of the kth car. In this calculation, due to the fixed positions of the bayonet and the microwave detector, the driving distance of the vehicle is fixed at 7.7km.

[0026] (3) Calculate the network buffer travel time rate, according to the above calculation formula, the calculation is as follows:

[0027] τ 50％ = 1.5min / km, τ 95％ =2.84min / km

[0028] In this example, the distance is constant, so:

[0029] NBTR=1.34min / km

[0...

Embodiment 2

[0032] Through the real-time observation of Baidu map and the road congestion of the same section and the same road section in Embodiment 1, it is found that this road section is a mixed road section of crowded and very crowded states. After recording the on-site driving time, it was found that the driving time was 23 minutes. The speed limit for vehicles on the Shangtang-Zhonghe Elevated Road is 80km / h, regardless of traffic interference, and the free-flow travel time is 11 minutes. The required reserved time for this section of the road proposed by the present invention is 10.32 minutes, which is similar to the actual travel delay time of 23min-11min=12min. It can be proved that the reserved time calculation method proposed by the present invention has higher accuracy and has better guidance for residents to travel effect.

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Abstract

The invention relates to a travel reserved time calculation method based on road network journey time reliability. The travel reserved time calculation method comprises the steps of: acquiring relevant data such as a journey distance between origin and destination of a passenger, and time of getting on and off a vehicle; calculating a journey time rate of a single route; calculating numerical values of a median and a 95th percentile of the journey time rate of the single route; calculating a network buffer journey time rate; and calculating to obtain travel reserved time according to the network buffer journey time rate and the journey distance. The travel reserved time calculation method provides a simple, practical, objective and effective quantitative calculation system for the travel reserved time, and provides better travel planning guidance for travelers.

Description

technical field [0001] The invention relates to the field of calculating reserved travel time, in particular to a method for calculating reserved travel time based on the reliability of road network travel time. Background technique [0002] During the operation of the urban road traffic system, it is often disturbed by random factors, such as frequent traffic accidents, temporary road maintenance and traffic control, sudden natural disasters (earthquakes, floods, bad weather), etc. It brings uncertainty, greatly reduces the reliability of the transportation system operation, and has a negative impact on the performance of urban transportation functions and urban development. Therefore, a smooth and reliable road traffic system is not only the basis for travelers to achieve their travel goals, but also the goal pursued by urban traffic managers. In this case, it is of great practical value to study the calculation method of reserved travel time considering the reliability o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q10/10G06Q50/30
CPCG06Q10/04G06Q10/109G06Q50/30
Inventor 陈喜群张帅超陈笑微陈楚翘郑宏煜刘教坤胡浩强崔尔佳
Owner ZHEJIANG UNIV