James Colyar

826 total citations
14 papers, 674 citations indexed

About

James Colyar is a scholar working on Transportation, Control and Systems Engineering and Building and Construction. According to data from OpenAlex, James Colyar has authored 14 papers receiving a total of 674 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Transportation, 7 papers in Control and Systems Engineering and 7 papers in Building and Construction. Recurrent topics in James Colyar's work include Transportation Planning and Optimization (8 papers), Traffic Prediction and Management Techniques (7 papers) and Traffic control and management (6 papers). James Colyar is often cited by papers focused on Transportation Planning and Optimization (8 papers), Traffic Prediction and Management Techniques (7 papers) and Traffic control and management (6 papers). James Colyar collaborates with scholars based in United States. James Colyar's co-authors include Nagui M. Rouphail, H. Christopher Frey, Alper Ünal, John Halkias, Rob Hranac, Glen McHale, Vassili Alexiadis, Alexander Skabardonis, Hwasoo Yeo and Michael Kyte and has published in prestigious journals such as Transportation Research Record Journal of the Transportation Research Board, Journal of the Air & Waste Management Association and ITE journal.

In The Last Decade

James Colyar

12 papers receiving 619 citations

Peers

James Colyar
Ihab El-Shawarby United States
H R Kirby United Kingdom
Peter Koonce United States
Jeffrey Taylor United States
Guangchuan Yang United States
James Colyar
Citations per year, relative to James Colyar James Colyar (= 1×) peers Paulo Fernandes

Countries citing papers authored by James Colyar

Since Specialization
Citations

This map shows the geographic impact of James Colyar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by James Colyar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites James Colyar more than expected).

Fields of papers citing papers by James Colyar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by James Colyar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by James Colyar. The network helps show where James Colyar may publish in the future.

Co-authorship network of co-authors of James Colyar

This figure shows the co-authorship network connecting the top 25 collaborators of James Colyar. A scholar is included among the top collaborators of James Colyar based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with James Colyar. James Colyar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

14 of 14 papers shown
1.
Colyar, James, et al.. (2020). Crowdsourcing for Advancing Operations. 1 indexed citations
2.
Kuhn, Beverly, Kevin Balke, Nicholas Wood, & James Colyar. (2017). Active Traffic Management (ATM) Implementation and Operations Guide. 9 indexed citations
3.
Ünal, Alper, H. Christopher Frey, Nagui M. Rouphail, & James Colyar. (2014). HOT SPOT ANALYSIS OF REAL WORLD VEHICLE EMISSIONS BASED UPON A PORTABLE ON-BOARD MEASUREMENT SYSTEM.
4.
Colyar, James, et al.. (2011). Fighting Congestion with Smarter Highways. Public roads. 75(2).
5.
Yeo, Hwasoo, Alexander Skabardonis, John Halkias, James Colyar, & Vassili Alexiadis. (2008). Oversaturated Freeway Flow Algorithm for Use in Next Generation Simulation. Transportation Research Record Journal of the Transportation Research Board. 2088(1). 68–79. 79 indexed citations
6.
Alexiadis, Vassili, James Colyar, & John Halkias. (2007). A model endeavor. Public roads. 70(4). 2–5. 2 indexed citations
7.
Colyar, James, et al.. (2004). The next generation simulation program. ITE journal. 74(8). 183 indexed citations
8.
Colyar, James, et al.. (2003). Identifying and Assessing Key Weather-Related Parameters and Their Impacts on Traffic Operations Using Simulation. 39 indexed citations
9.
Colyar, James & Nagui M. Rouphail. (2003). Measured Distributions of Control Delay on Signalized Arterials. Transportation Research Record Journal of the Transportation Research Board. 1852(1). 1–9. 20 indexed citations
10.
Frey, H. Christopher, Alper Ünal, Nagui M. Rouphail, & James Colyar. (2003). On-Road Measurement of Vehicle Tailpipe Emissions Using a Portable Instrument. Journal of the Air & Waste Management Association. 53(8). 992–1002. 216 indexed citations
11.
Colyar, James. (2001). An Empirical Study of the Relationships Between Macroscopic Traffic Parameters and Vehicle Emissions. NCSU Libraries Repository (North Carolina State University Libraries). 6 indexed citations
12.
Rouphail, Nagui M., H. Christopher Frey, James Colyar, & Alper Ünal. (2001). VEHICLE EMISSIONS AND TRAFFIC MEASURES: EXPLORATORY ANALYSIS OF FIELD OBSERVATIONS AT SIGNALIZED ARTERIALS. 45 indexed citations
13.
Frey, H. Christopher, Nagui M. Rouphail, Alper Ünal, & James Colyar. (2001). EMISSIONS REDUCTION THROUGH BETTER TRAFFIC MANAGEMENT: AN EMPIRICAL EVALUATION BASED UPON ON-ROAD MEASUREMENTS. 61 indexed citations
14.
Kyte, Michael, et al.. (1997). Field Measurements of Capacity and Delay at Unsignalized Intersections. ITE journal. 67(4). 22–26. 13 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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