As we all know, urban transportation provides convenience for residents to travel and serve urban development. However, people often overlook urban transport as an integral part of the city. The city's traffic capacity is one of the important constraints to the urban environmental capacity. Once the city traffic is severely blocked, urban life will be embarrassed. Because the life of the city depends on various internal and external communication, they are like the blood of the organism, the blood is impassable, and the metabolic process is terminated. Urban transportation is divided into two major sections: private transportation and public transportation. In underdeveloped areas, there are still more non-motorized vehicles, all of which can be classified as private transportation. With the development of economy and society, the number of private motor vehicles will also increase. Public transport and private transport, the two complement each other and replace each other. In the city, the former can not completely replace the latter, and the latter cannot completely replace the former. However, if the former can be developed more conveniently, the number of the latter can be reduced. Therefore, the two should achieve a certain degree of balance, the proportion of which should be determined according to the actual situation, and the result of the optimized combination should minimize the average travel time. However, according to the experience of countries around the world, it has been recognized that in the city, especially in its central area, the public transportation system should be the mainstay, and private transportation must be subordinate to public transportation. Otherwise, if private cars are rampant, there is no optimal solution at all, no matter how to classify roads, increase roadways, and design various intersections. In the case of a certain proportion of urban roads and parking lots, road traffic capacity will tend to be saturated as the floor area ratio of buildings on both sides of the road increases. If the city is to continue to develop in situ, road construction must cross a threshold, that is, to develop underground and above-ground multi-layer road systems, which requires huge investment. Urban transportation is a complex system, and its composition and structure should be continuously researched and tested according to the urban land use layout and the development of internal and external traffic demand. The surge in the number of motor vehicles in the city and the growing number of bicycles have made urban road congestion increasingly serious. Although many cities have made remarkable achievements in building roads, the growth of roads is far behind the growth of vehicles. Of course, urban traffic problems must be comprehensively managed to achieve better results. The urban form we plan should take the form of facilitating the dispersal of traffic flow and keeping the traffic of the main road clear, such as a centerless square form or a triangular road network, which is conducive to uniform distribution of traffic flow; organically dispersed form, the main road is arranged in the green belt In the form of zone, the main road and the branch road are strictly isolated; in addition, there is a Radbourne-type car diversion system. Multi-centre systems are also available in urban centers. A multi-centered ribbon city network, a triangular trunk network, is also a form of decentralized traffic flow. The original road system of the city was reconstructed to make it as suitable as possible. The original road system of modern transportation was mostly planned in the walking and horse-drawn era. It was generally narrow, and the intersection was too dense. It was not classified according to function and speed. In the past ten years, the transformation has mainly focused on widening and straightening, opening the broken road, and repairing the bridge. However, in the system mode, it is often developed on the checkerboard basis to form a single-center radiological ring, adding loops and radiation paths to the outside. The classification and classification of roads are ambiguous, and there are serious phenomena such as mixed vehicles, non-mixed vehicles, mixed speeds and chaotic jams, resulting in a continuous decline in urban traffic speed and an increase in traffic accident rates. T/C Shirt,Male Tc Print Shirt,Long Sleeve Print T/C Shirt,Navy Blue T/C Shirt SHAOXING GUANGQI TRADING CO.,LTD , https://www.sxgqtrading.com
Urban transport development