Cennavi Released the 2019 Q1 Traffic Report and Described Urban Traffic Congestion from Many Aspects

Createtime：2019-04-29
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Recently, Cennavi (Cennavi for short), a professional big data company under NavInfo, has officially released the 2019 Q1 Traffic Analysis Report. This report's data come from the Cennavi big data analysis platform, NavInfo traffic index platform and China urban road network density monitoring platform. Based on more than 340 cities covered by Cennavi real-time road condition, data returned by 16 million vehicles in real time and data returned by 30 million mobile map APP daily active users, 36 major cities are selected for analysis. The report shows that the overall traffic situation of major cities in the 2019 Q1 is basically the same as that in the same period of 2018. 


Lhasa ranked the 1st among the Traffic Delay Index Year-on-year Increase Top 10 Cities 


Delay index refers to the ratio of actual road transit time to transit time in the free flow (smooth) state. It shows road network congestion from the perspective of time. The larger the index, the lower efficiency of road network operation, the longer the travel time. 


The report shows that Lhasa ranked the 1st among the traffic delay index year-on-year increase top 10 cities. The traffic delay index witnessed a year-on-year increase of 5.28%, about 2.27 times that of Chengdu ranking the 2nd, indicating that urban traffic congestion was serious. According to the data, car parc in Lhasa is in a state of rapid growth. By the end of 2018, car parc reached 249,600, an increase of greater than 10% compared with that in March 2018 (226,000). It further intensified congestion in Lhasa, and urban traffic was obviously affected by the rapid growth of car parc. 


 
Urumqi Topped the List with Outstanding Performance in the Traffic Delay Index Year-on-year Decrease Top 10 Cities 
According to the data, Urumqi topped the list in the 2019 Q1 traffic delay index year-on-year decrease Top 10 cities. The traffic delay index declined by about 6.98%, mainly because the traffic police in Urumqi took active measures to solve such problems as unstandardized urban road excavation and occupation and low ramp passage rate at the exit of the viaduct. They also checked, corrected road occupation in rail traffic construction, standardized construction management, reduced viaduct exit ramp, and refined traffic order regulation, so that the overall road capacity was improved.

 

The Urban Traffic Congestion Five-dimensional Portrait Was Launched for the First Time to Analyze Urban Traffic 

To respond to the "Action Plan on Improving Urban Traffic Etiquette and Ensuring Smooth Urban Traffic" jointly initiated by the Ministry of Public Security, Office of the Spiritual Civilization Development Steering Commission, the Ministry of Housing and Urban-Rural Development and the Ministry of Transport, Cennavi launched the urban traffic congestion five-dimensional portrait for the first time. 


The urban traffic congestion five-dimensional portrait mainly includes the space-time congestion index, delay index, inter-regional congestion imbalance coefficient, proportion of recurrent congestion, proportion of severely congested road section mileages and other indexes. Urban traffic will be analyzed comprehensively from time, space, strength and other aspects. 

 

It can be seen from the report that among Beijing, Shanghai, Guangzhou, Shenzhen and other first-tier cities, traffic congestion in Beijing is the worst, and the proportion of recurrent congestion is also significantly greater than those of other cities. The overall traffic condition in Shanghai is better than other first-tier cities. The overall traffic condition in Guangzhou is average in the first-tier cities, and different roads vary a little greatly in congestion. The proportion of recurrent congestion in Shenzhen is the lowest among the first-tier cities. 


In sub-provincial cities, Chengdu has the worst congestion, and each index is higher than the average of sub-provincial cities. Qingdao has better traffic condition. The overall traffic condition in Xi'an is in the middle of sub-provincial cities. Four indexes including delay index are slightly lower than the average of sub-provincial cities, and the proportion of recurrent congestion is slightly higher than the average. 

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