The Long Tail In Road Safety Reconstruction

摘要

The Long Tail theory is a new theory with the rising of the Internet. As the long tail theory says, the common market share, which is occupied by these products where demand and sales are not high, can be compared to market share of mainstream products, and even greater, when the commodity storage space and channel are broad enough. In the field of traffic safety, people tend to focus on the segments where the indicators are relatively high, such as accident black spots and the intersections. At the same time they tend to ignore most of the remaining segments at which less accidents or even no accidents occur. Under the inspiration of the long tail theory, the sum of accident numbers in these segments and the needs of safety reconstruction is also very high. As networks developed, especially mobile networks, using crowdsourcing models identifies potential accident segments, reduces the cost, and increases the overall traffic road security. Usually, road reconstruction of accident blackspots or replan of the intersections have significant costs, and those segments of less accidents cost less. A cost-effective indicator of security is put forward, namely that when the ratio of the safety reconstruction effect before and after costs are relatively high, we should maintain these high cost-effective indicator segments to improve overall road network traffic safety. If we are able to solve traffic safety problems of these smaller segments, at less cost and high efficient, it will also greatly reduce traffic accidents and increase road safety performance. To some extent, we must pay attention to the long tail segment.