Forecasting technical scheme for traffic congestion spreading caused by waterlogging under bridge

Abstract

The invention discloses a forecasting technical scheme for traffic congestion spreading caused by waterlogging under bridge. The forecasting technical scheme for the traffic congestion spreading caused by the waterlogging under bridge is characterized by comprising two models. According to the first model, a point section under the bridge is served as a central point of congestion caused by waterlogging, the central point is served as a starting point, and a range of congestion influence at the end of every forecasting period is obtained by multiplying the forecasted congestion spreading speed and the forecasting time when the range of congestion influence is forecasted in every forecasting period. According to the second model, at an initial first forecasting period, the point section under the bridge is served as the central point to obtain the boundary of a range of congestion influence at the end of the first forecasting period and at a second forecasting period, a boundary of the end of the first forecasting period is served as a starting point, a boundary of the end of the second forecasting period is obtained by utilizing products of the congestion spreading speed and the time, and the congestion spreading speed at the moment is a vector. The forecasting technical scheme for the traffic congestion spreading caused by the waterlogging under bridge has the advantages of providing warning information and traffic guidance to keep away from areas which are seriously influenced by the waterlogging, being convenient for people going out and guaranteeing travel safety of people.

Description

technical field [0001] The invention belongs to the field of intelligent prediction of accumulated water under bridges, and in particular relates to a technical solution for predicting the spread of traffic congestion caused by accumulated water under bridges. Background technique [0002] Severe weather is an important influencing factor in the traffic operation status of urban road network. For example, flooding on roads caused by heavy rainfall and poor drainage can seriously affect traffic flow. When the depth of water accumulation on the road reaches a certain level, the road traffic flow will be completely interrupted, resulting in a large number of upstream vehicles gathering, and the driving speed of the convoy will be close to zero. With the passage of time, the congestion phenomenon will continue to spread from the waterlogged section to the upstream section and the overpass section, resulting in traffic congestion within a certain range and affecting the operatio...

AI Technical Summary

Problems solved by technology

With the passage of time, the congestion phenomenon will continue to spread from the waterlogged section to the upstream section and the overpass section, resulting in traffic congestion within a certain range and affecting the operation of the overall road network

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