| At present, China's urban road access management system have not been standardized, widespread road too many entrances and exits, entrances and exits, such as the arbitrary location phenomenon, affecting not only the cities to the road function, has also become a great security risk. This thesis view of the current China's urban arterial road access of the existence of a range of issues, from U.S. access management thinking, comprehensive use of traffic engineering theory, theory of traffic psychology, and the existing road planning, design specifications, application traffic micro-simulation technology, a clear China's urban Arterial Road safety exits and spacing, the operating efficiency of the relationship between the spirit of "safety first, take into account the efficiency" principle, determined based on safety, determine the city arterial road reasonable access spacing standards. This thesis has mainly accomplished the following research content.Urban road access spacing pitch with the requirements of different types of access types , the paper based on the functions of the road grading, access controls, access of the arterial road to division, based on the relationship between access types, and functions of intersection area defined.In the principle of making the intersection functional areas integrity, based on existing theories, identify the vehicles fill the transfer lane, crossing the-horizon, the effectiveness of signs, such as intersection safety requirements of the pitch, determine the theoretical intersection spacing. Then to a speed for the assessment indicators, confirmed the intersection spacing of the impact of operational efficiency. In the simulation environment, the operate speed indicators for the assessment, analysis of traffic signal cycle, the main road junction spacing and the green time proportion the combined effects of changes of operational efficiency. In the best signal cycle and in line with traffic levels, identify operational efficiency to meet the requirements of reasonable intersection spacing. Considered safe distance and efficiency of space, recommended the intersection reasonable spacing standards.Analysis the arterial road access spacing by the pitch conditions and determining factor. According to access spacing theoretical model, determine the theoretical access spacing. Through analysis of factors affecting access to space, the application of microscopic traffic simulation methods for different types of arterial roads, considered different traffic load factor, integrate the impact of access, assessment of different simulation program under the direction of the average delay per vehicle. According to simulation results of analysis, recommend the reasonable access spacing.Meta-analysis of the results of research on the paper, recommend the access spacing standards of urban arterial road. |
PDF Full Text Request