Measuring Traffic
نویسندگان
چکیده
منابع مشابه
Measuring Traffic
A traffic performance measurement system, PeMS, currently functions as a statewide repository for traffic data gathered by thousands of automatic sensors. It has integrated data collection, processing and communications infrastructure with data storage and analytical tools. In this paper, we discuss statistical issues that have emerged as we attempt to process a data stream of 2 GB per day of w...
متن کاملMeasuring Heterogeneous Traffic Density
Traffic Density provides an indication of the level of service being provided to the road users. Hence, there is a need to study the traffic flow characteristics with specific reference to density in detail. When the length and speed of the vehicles in a traffic stream vary significantly, the concept of occupancy, rather than density, is more appropriate to describe traffic concentration. When ...
متن کاملMeasuring and Characterizing Cache Coherence Traffic
Cache coherence protocols for sharedmemory multiprocessors have been well-studied. Here we present a trace-driven cache simulator used to derive network traffic statistics for three simple coherence protocols and three directory formats. Results for the SPLASH benchmarks are compared with published results and found to be in agreement. A short discussion of the strengths and weaknesses of each ...
متن کاملMeasuring Modern Roundabout Traffic Conflict Exposure
This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date...
متن کاملTraffic Flow Measuring System by Image Processing
In this paper, we show anew image sensor for measuring traffic flow. The image sensor is set at an intersection. The image sensor measures t r af f i c flow by vehicle tracking. The tracking is done by gray level pattern matching. Gray level pattern matching is suitable for outdoor use since it is robust against change of scene brightness. Then we provide the hardware for high speed gray level ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Statistical Science
سال: 2007
ISSN: 0883-4237
DOI: 10.1214/07-sts238