Results 221 to 230 of about 151,942 (250)

Average Travel Time, Planning Time Index, and Buffer Time Index Thresholds for Freeway Weaving Sections, Merging Areas, and Diverging Areas

Journal of Transportation Engineering, Part A: Systems, 2021
AbstractEfforts were initiated through the Strategic Highway Research Program (SHRP) to quantify level of service (LOS) based on travel time and travel time reliability.
Srinivas S. Pulugurtha, Md Shah Imran
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Seq2Img-DRNET: A travel time index prediction algorithm for complex road network at regional level

Expert Systems with Applications, 2021
Abstract Nowadays, traffic situation prediction is a major concern. Travel time index prediction is one of the representative tasks in traffic situation prediction. Most research of the current prediction focuses on road-level speed, but the travel time index prediction of complex road network at the regional level has not been well solved.
Xiujuan Xu, Yuzhi Sun, Yulin Bai, Kai Zhang, Yu Liu 0035, Xiaowei Zhao 0003   +5 more
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kNN Search Utilizing Index of the Minimum Road Travel Time in Time-Dependent Road Networks

2014 IEEE 33rd International Symposium on Reliable Distributed Systems Workshops, 2014
Recently, there has been an increasing interest in search in time-dependent road networks where the travel time on roads depends on the time. In such a time-dependent network, the result of k Nearest Neighbor (kNN) queries, which search the k nearest neighbors (kNNs) from the specified location, depends on the query-issuing time.
Yuka Komai, Duong Hong Nguyen, Takahiro Hara, Shojiro Nishio   +3 more
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Practical Index Framework for Efficient Time-Travel Phrase Queries on Versioned Documents

2016 Data Compression Conference (DCC), 2016
In this paper, we propose a new framework to index versioned documents, and extend the keyword queries into the more general phrase queries. Our index answers a one-sided time-constrained phrase query for any phrase P in O((|P|+k)log n) time, where n is the dataset size and k is the output size.
Chun-Ting Kuo, Wing-Kai Hon
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A phosphorus index that combines critical source areas and transport pathways using a travel time approach

Journal of Hydrology, 2013
Summary Spatially distributed nonpoint source (NPS) pollution indices are used to identify areas in a watershed where potential pollutant loading coincides with runoff generating areas. However, most such indices either ignore the degree of hydrologic connectivity to the stream network or they estimate it based simply on the distance of the pollution
Brian P. Buchanan, Josephine A. Archibald, Zachary M. Easton, Stephen B. Shaw, Rebecca L. Schneider, M. Todd Walter   +5 more
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Comparison of several traffic forecasting methods based on travel time index data on weekends

Journal of Shanghai Jiaotong University (Science), 2010
Traffic forecasting provides the estimation of future traffic state to help traffic control, travel guide, etc. This paper compared several widely used traffic forecasting methods, and analyzed each one’s performance in detail to make conclusions, which could redound to researchers choosing an appropriate traffic forecasting method in their own works ...
Yang Zhang, Wen-huan Shi, Yun-cai Liu
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More than travel time: New accessibility index capturing the connectivity of transit services

Journal of Transport Geography, 2019
Abstract Various qualities of transit services, including travel time, frequency, and the presence of alternative paths, affect accessibility—how easily passengers can reach their destinations by transit. Traditional accessibility metrics, such as gravity-type and cumulative-opportunity indices, rely exclusively on travel time as a proxy for travel ...
Junghwan Kim, Bumsoo Lee
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Examining Congestion Pricing Scheme Effectiveness Using the Travel Time Congestion Index

Transportation Research Record: Journal of the Transportation Research Board
This study investigated the effectiveness of congestion pricing (CP) using the travel time congestion index (TTCI), a congestion assessment tool, in Hyderabad, India. Initially, a set of hypothetical mode choice scenarios under the CP scheme were designed to collect car users’ perceptions based on a stated preference (SP) experiment.
Naveed Farooz Marazi, Bandhan Bandhu Majumdar, Prasanta K. Sahu   +2 more
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Developing a Travel Time Congestion Index

Transportation Research Record: Journal of the Transportation Research Board, 1996
A congestion index that is keyed to the differences in actual versus desired travel times for various types of roadways is described. The suggested index provides a continuous scale for assessing the amount of congestion incurred. It encompasses a wide range of values and is easy to understand and use.
Herbert S. Levinson, Timothy J. Lomax
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