Why is there a traffic jam when it rains in Shijiazhuang?

This needs to be said from the following aspects:

1. Drainage system, there are many old towns in Shijiazhuang, and the underground drainage system needs to be improved. When it rains, Shijiazhuang becomes the Dienis on the water, called watching the sea. In this way, walking and cycling in places with large and small pools will be inconvenient, and many people choose to drive.

2. Driving ability, there are many old drivers in Shijiazhuang, but not many have super driving ability. Should we slow down in rainy days for safety?

3. Traffic accidents, as mentioned above, limited driving skills have caused a high incidence of rear-end collisions. You don't want to wait for the traffic police to deal with it, of course you will block the street.

4. Cycling and pedestrians. On rainy days, people who ride electric bicycles will run to the expressway to avoid the jishuitan. Do you think the driver dare not slow down?

There is no traffic jam when it rains in Shijiazhuang. That's a ghost. You can look at the drainage ditches along the Second Ring Road, especially the national highway 107. Is that Pat's ditch? South Second Ring Road, the underpass bridge on the south side of the railway station, it rained last time and the traffic lights have been flat for several days. Nobody cares, but they will be away for at least a few days. Can we avoid accidents and traffic jams? Where is the efficiency? In short, just like Xiangyun International, the officials are different. Seeing from a distance will help the people a little, which is the real good thing.

1. In bad weather, the total amount of trips in the city is actually less than usual (people try to reduce unnecessary trips), but the traffic conditions on the roads are worse than usual. Because people are more cautious in driving in bad weather, everyone's travel time is lengthened, and the traffic demand carried by the transportation system is increased according to time (that is, the traffic volume measured by car hours is increased). The increase of traffic volume reduces the reliability of the traffic system and is more likely to form congestion.

Second, traffic congestion is generally divided into synchronous flow and chaotic congestion in traffic flow theory. In bad weather, it is easy to amplify the bottleneck effect of some intersections. It may be that although this section is usually crowded, it is still in a state of "synchronous flow", that is, vehicles can "rub" forward at a relatively slow speed; In rainy days, the traffic system is more saturated and more sensitive to the factors that lead to congestion. A small disturbance may lead to chaos, and quickly spread to the whole road section during rush hour, forming a chaotic congestion from the upstream intersection to the downstream intersection.

Generally speaking, there is no good way to avoid traffic jams in rainy days. The main countermeasures are to strengthen the hierarchy and classification of traffic management and give priority to ensuring the mobility level of high-grade traffic systems, because mobility is the key to ensuring the normal operation of cities.

First, some drivers have personal quality problems. When it rains, drivers will drive more carefully. After all, the road is slippery and the brakes are not very effective in this situation.

Moreover, the visibility will be reduced in rainy days, so people travel longer. If there are drivers playing around at this time, it is very dangerous, and everyone can only be more careful. It is easy to form congestion at this time.

Second, rainy days lead to an increase in the number of taxis and shuttle buses. Because of the rain, people who used to walk and travel by non-motor vehicles on sunny days may turn to more comfortable motor vehicles, resulting in an increase in the proportion of cars with fewer passengers, such as private cars and taxis, which is also unfavorable to the operation of road traffic.

Traffic jams are not exclusive to Shijiazhuang when it rains. It is normal that many cities are prone to traffic jams when it rains.

Because the road is slippery in rainy days, the driver's sight will be affected. Everyone knows that rainy days are slow, so when it rains, vehicles are slow and the speed can't be raised, which will cause serious road traffic congestion. In addition, when it rains, people will drive more times than usual. When the weather is fine, some people like to go to work by tram, but when it rains, they have no choice but to drive.

In addition, when it rains, whether driving or riding an electric car, people want to go home early, so some people who are unconscious start to change lanes at will and run wildly on the road. The more people don't obey the traffic rules, the more congested the roads will be. Combining these factors, traffic jams occur in rainy days, such as Shijiazhuang and other cities.

In fact, as long as everyone goes his own way, even in rainy days, road traffic will be more orderly, so that traffic will be faster and traffic congestion will be alleviated. Therefore, civilized driving needs to be remembered forever.

Why are many brilliant answers folded? Is it necessary to be long and detailed enough? My summary is as follows: 1. The number of crown blocks increases when it rains.

Second, the drainage system cuts corners.

Third, driving slowly in rainy days.

Fourth, sunny days are always blocking the city.