ترجمه مقاله نقش ضروری ارتباطات 6G با چشم انداز صنعت 4.0
- مبلغ: ۸۶,۰۰۰ تومان
ترجمه مقاله پایداری توسعه شهری، تعدیل ساختار صنعتی و کارایی کاربری زمین
- مبلغ: ۹۱,۰۰۰ تومان
Automatic incident detection and characterization is urgently required in the development of advanced technologies used for reducing non-recurrent tra.c congestion on freeways. This paper presents a new method which is constructed primarily on the basis of the fuzzy clustering theories to identify automatically freeway incidents. The proposed approach is capable of distinguishing the time-varying patterns of incident-induced tra.c states from the patterns of incident-free tra.c states, and characterizing incidents with respect to the onset and end time steps of incidents, incident location, the temporal and spatial change patterns of incident-related tra.c variables in response to the impacts of incidents on freeway tra.c 1ows in real time. Lane tra.c count and density are the two major types of input data, which can be readily collected from point detectors. Based on the spatial and temporal relationships of the collected raw tra.c data, several time-varying state variables are de4ned, and then evaluated quantitatively and qualitatively to determine the decision variables used for real-time incident characterization. Utilizing the speci4ed decision variables, the proposed fuzzy clustering-based algorithm executes recurrently three major procedures: (1) identi4cation of tra.c 1ow conditions, (2) recognition of incident occurrence, and (3) incident characterization. In this study, data used for model tests are generated from the CORSIM tra.c simulator. Our preliminary test results indicate that the proposed approach is promising, and, in expectation, can be integrated with any published real-time incident detection technologies. Importantly, this study may contribute signi4cantly to the applications of fuzzy clustering techniques, and stimulate more related research. c 2002 Elsevier Science B.V. All rights reserved.