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By Jaume Barceló, Masao Kuwahara
This ebook comprises twelve chosen papers offered on the foreign Workshop on site visitors info assortment and its Standardization hung on September 8-9th 2008 in Barcelona. prepared and chaired via Barcelo and Kuwahara, the workshop was once meant to ascertain the needs and caliber of knowledge and the way it truly is gathered and utilized in site visitors research, with the final motive of bettering and standardizing the practice.
Traffic info is the cornerstone to every little thing from the main classical site visitors keep an eye on research to the main complex real-time keep watch over and administration imposing sleek clever Transportation structures (ITS) functions. those functions are based at the availability of site visitors facts provided via an information assortment approach which, outfitted with roughly subtle applied sciences, offers measurements at the primary site visitors variables, preferably with the necessary point of temporal aggregation, and maybe, while the expertise permits it, extra measurements on different variables of curiosity, counting on the kind of software during which they are going to be used. The purposes are in flip supported via types, and actually the first use of the information is to supply the enter to site visitors types whose caliber is dependent upon the standard, consistency, robustness, finishing touch and different features of the data.
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Parsons. -B. edu J. Barceló and M. -B. Zhang et al. 1 Caltrans system management pyramid This chapter discusses the data needs for monitoring and evaluating integrated multimodal transportation systems and the efforts undertaken by the California PATH program to collect high quality data for supporting comprehensive evaluations. Particularly, it describes the Parsons Traffic and Transit Laboratory and, through a few examples, how it supports research at PATH. 1 Data for Measuring Freeway Performance Freeway performance measurement requires the availability of real-time data from surveillance sensors and tools for data storage, processing, and analysis.
5 million or 40% of all police-reported crashes in the USA occurred at or near intersections. 5% were fatal accidents and 848,000 or 46% resulted in injury. The RLR aspect of this problem is known and serious, as approximately 20% of all intersection crashes occur due 3 Data Collection for Measuring Performance of Integrated Transportation Systems 41 to signal violation crashes. These crashes result in an estimated cost of $13 billion a year when considering fatalities, lost wages, medical costs, property damages, and insurance.
By using HiL, we can easily debug developed methodologies, verify their applicability, and evaluate their impacts. A testing intersection at UC Berkeley’s Richmond Field Station supports initial field testing before FOT. Except for flowing traffic, all of the communication and control hardware and software, roadside and on-vehicle detection sensors, and the movement of testing vehicles are consistent with the field situation. In the Lab, monitoring programs, database tools, and data analysis software have been developed to help researchers and engineers to debug and improve the testing system.