PUBLICATIONS

39. Hyuk-Jae Roh. Optimizing Winter Traffic Forecasting Through Spatially Transferable Models in  Cold Regions: Insights for Infrastructure Management. European Transport Studies, (under review).

38. Hyuk-Jae Roh. (2025) Classified Traffic Volume Reduction Modelling under Winter Hazards: Insights from High-Resolution WIM and Weather Data in Alberta. ASCE Journal of Transportation Engineering, Part A: Systems, (in revision-SCIE).

37. Hyuk-Jae Roh*, Babak Mehran. (2025) Assessing Traffic Vulnerability to Climate Hazards in Cold Regions: The Impact of Harsh Winter Conditions on Highway Traffic Volumes. Transportation Planning and Technology, Vol. 45, Issue 6, pp. 473-497, Taylor & Francis Group. DOI:10.1080/03081060.2025.2465557. (SCIE) 

36. Hyuk-Jae Roh. (2025) Sustainability Enhancement of Inclement Weather Dummy Factor Model: A Study of Big Traffic Data in Canada. ASCE Journal of Cold Regions Engineering, Vol. 39, Issue 3, Article ID 04025016, American Society of Civil Engineers. DOI:10.1061/JCRGEl/CRENG-847. (SCIE)

35. Hyuk-Jae Roh. (2025) Development and Application of a Winter Weather Traffic Imputation Model: A Comparative Study Against Machine Learning Techniques During the Winter Season. Sustainability,  Vol. 17, Issue 1, 210, MDPI (invited paper). DOI: 10.3390/su17010210. (SSCI & SCIE)

34. Hyuk-Jae Roh. (2024) Modelling Severe Weather Impact on Traffic Mobility and Evaluating Cross-Regional Applicability to Functionally Distinct Segments in Cold Region Highway Networks. Sustainable Futures, Vol. 8, Article ID 100370, Elsevier. DOI:10.1016/j.sftr.2024.100370. (ESCI)

33. Hyuk-Jae Roh. (2024) Robust Evaluation of Big Data-Driven Winter Weather Traffic Models Using Six Weigh-in-Motion Sites as Testbeds in Alberta's Highway Network. Transportation Planning and Technology, Vol. 45, Issue 6, pp. 473-497, Taylor & Francis Group. DOI:10.1080/03081060.2024.2423013. (SCIE) 

32. Hyuk-Jae Roh. (2023) Model Development and Simulation for Predicting Proportional Changes in Traffic Volume as a Consequence of Natural Weather Hazards. Weather, Climate, and Society,  Vol. 15, Issue 4, pp. 1069-1084, American Meteorological Society. DOI: 10.1175/WCAS-D-22-0119.1. (SSCI & SCIE) 

31. Hyuk-Jae Roh*, Rillagoda G. N. Yasanthi. (2023) Modelling Traffic Volume Reduction as a Function of Winter Weather Factors in a Cold Region Highway. ASCE Journal of Cold Regions Engineering, Vol. 37, Issue 1, Article ID 06022004, American Society of Civil Engineers. DOI:10.1061/JCRGEl/CRENG-630. (SCIE)

30. Hyuk-Jae Roh. (2023) Data-driven Sustainability Validation of Winter Traffic Model through Spatial Transferability of the Model's Parameters between Functionally Homogeneous and Heterogeneous Highway Segments. ASCE Journal of Transportation Engineering, Part A: Systems, Vol. 149, Issue 2, Article ID 04022147, American Society of Civil Engineers.  DOI:10.1061/(ASCE)JTEPBS/TEENG-7204. (SCIE) 

29. Hyuk-Jae Roh. (2022) A Study on Securing Model Usefulness through Geographical Scalability Testing of Winter Weather Model Developed with Big Traffic Data. Transportation Planning and Technology,  Vol. 45, Issue 6, pp. 473-497, Taylor & Francis Group. DOI:10.1080/03081060.2022.2132947. (SCIE)

28. Hyuk-Jae Roh. (2022) Developing a Risk Assessment Model for a Highway Site during the Winter Season and Quantifying the Functional Loss in terms of Traffic Reductions Caused by Winter Hazards Conditions.  ASCE Journal of Transportation Engineering, Part A: Systems, Vol. 148, Issue 7, Article ID 04022036, American Society of Civil Engineers. DOI:10.1061/(ASCE)JTEPBS.0000690. (SCIE)

27. Hyuk-Jae Roh. (2022) Development and Verification of Winter Weather Traffic Hazard Models for the Alberta Highway Network. Canadian Journal of Civil Engineering, Vol. 49, Issue 6, pp. 942-953, Canadian Science Publishing. DOI: 10.1139/(CSCE)cjce-2021-0169. (SCIE)

26. Prasanta Sahu*, Avijit Maji, Bhargav Nath,  and Hyuk-Jae Roh. (2022) Questionnaire Based Study of Drivers’ Error and Violation at Four-legged Signalized Intersection. Transportation Letters: The International Journal of Transportation Research, Vol. 14, Issue 9, pp. 944-955, Taylor & Francis. DOI: 10.1080/19427867.2021.1961992. (SSCI & SCIE)

25. Hyuk-Jae Roh. (2021) Diagnosing the Effects of Weather Factors on Cold Region  Highway Traffic Operation with Two Layers of Nonparametric Statistical Analysis. ASCE Journal of Cold Regions Engineering, Vol. 35, Issue 2, Article ID 04021005, American Society of Civil Engineers. DOI: 10.1061/(ASCE)CR.1943-5495.0000251. (SCIE) 

24. Hyuk-Jae Roh. (2021) Comparative Study on the Performance of Four Fundamental Optimization Algorithms Applied for Transportation Mode Choice Modelling. Transportation Engineering, Vol. 3. Article ID 100043, Elsevier. DOI: 10.1016/j.treng.2020.100043. (SCOPUS) 

23. Swetha Malika, Hyuk-Jae Roh, Prasanta Sahu*, Gopal Patil, and Satish Sharma. (2020) Investigating the Effect of Rainfall on Classified Traffic Volume on an Urban Arterial in India. Indian Journal of Transport Management, Vol. 44, Issue 2, pp. 68-81, Central Institute of Road Transport. ISSN 0970-4736.

22. Prasanta Sahu, L. M. Bayireddy and Hyuk-Jae Roh*. (2020) A New Approach to Exploring the Relationship between Weather Phenomenon and Truck Traffic Volume in the Cold Region Highway Network. Modelling, Vol. 1, Issue 2, pp.122-133, MDPI (invited paper). DOI: 10.3390/modelling1020008. (SCOPUS & ESCI)

21. Hyuk-Jae Roh. (2020) Assessing the Effect of Snowfall and Cold Temperature on a Commuter Highway Traffic Volume using Several Layers of Statistical Methods. Transportation Engineering, Vol. 2. Article ID 100022, Elsevier. DOI: 10.1016/j.treng.2020.100022. (SCOPUS)  

20. Hyuk-Jae Roh. (2020) Modelling Chronic Winter Hazards as a Function of Precipitation and Temperature. Natural Hazards, Vol. 104, Issue 2, pp. 1723-1745, Springer. DOI: 10.1007/s11069-020-04243-x. (SCIE)

19. Hyuk-Jae Roh. (2020) Spatial Transferability Testing of Dummy Variable Winter-Weather Model Using Traffic Data Collected from Five Geographically Dispersed Weigh-in-Motion Sites in Alberta Highway Systems. ASCE Journal of Transportation Engineering, Part A: Systems, Vol. 146, Issue 11, Article ID 04020128, American Society of Civil Engineers. DOI: 10.1061/(ASCE)JTEPBS.0000449. (SCIE) 

18. Hyuk-Jae Roh. (2020) Development and Performance Assessment of  Winter Climate Hazard Models on Traffic Volume with Four Model Structure Types. ASCE Natural Hazards Review, Vol. 21, Issue 3, Article ID 04020023, American Society of Civil Engineers. DOI: 10.1061/(ASCE)NH.1527-6996.0000389. (SSCI & SCIE) 

17. Hyuk-Jae Roh. (2019) Developing Cold Region Winter-Weather Traffic Models and Testing Their Temporal Transferability and Model Specification. ASCE Journal of Cold Region Engineering, Vol. 33, Issue 3, Article ID 04019009, American Society of Civil Engineers. DOI: 10.1061/(ASCE)CR.1943-5495.0000193. (SCIE) 

16.  Babak Mehran*, Musharraf Ahmad Khan, Mina Mehran, Hyuk-Jae Roh, and Satish Sharma. (2019)  Case Study Scenarios in Site Selection of Hazardous Material Facilities Based on Transportation Preferences. Journal of Modern Transportation, Vol. 27, Issue 4, pp. 317-333, Springer. DOI: 10.1007/s40534-019-0190-5. (SCOPUS & ESCI)

15. Hyuk-Jae Roh, Furqan Bhat, Prasanta K. Sahu*, Satish Sharma, Babak Mehran, Ata M. Khan, and Orlando Rodriquez. (2019) Appraisal of Temporal Transferability of Cold Region Winter Weather Traffic Models for Major Highway Segments in Alberta Canada. Geosciences, Vol. 9, Issue 3, 137, MDPI (invited paper). DOI: 10.3390/geoscience9030137. (SCOPUS & ESCI) 

14. Hyuk-Jae Roh* and Satish Sharma. (2019) Combined Nonparametric Chi-squared and Binomial Statistical Test on Truck Traffic Volume Changes in Canadian Provincial Highway Network. Transport, Vol. 34, No. 1, pp. 103-114, VGTU Press. DOI: 10.3846/transport.2019.7672. (SCIE)

13. Hyuk-Jae Roh* and Satish Sharma. (2018) Microscopic and Macroscopic Diagnosis of the Impact of Weather Conditions on Truck Traffic Patterns in Regional Commuter Road. Journal of Modern Transportation, Vol. 26, Issue 1, pp. 57-71, Springer.  DOI: 10.1007/s40534-017-0153-7. (SCOPUS & ESCI)

12. Hyuk-Jae Roh*, Satish Sharma, Prasanta K. Sahu, and Babak Mehran. (2018) Statistical Investigation of Truck Type Distribution on Cold Region Highways during Winter Months. KSCE Journal of Civil Engineering, Vol. 22, Issue 4, pp. 1394-1405, Springer. DOI: 10.1007/s12205-017-0573-2. (SCIE)

11. Hyuk-Jae Roh*, Satish Sharma, Prasanta K. Sahu, and Babak Mehran. (2018) Performance Comparison of Mode Choice Optimization Algorithm with Simulated Discrete Choice Modeling. Modelling and Simulation in Engineering, Vol. 2018, Article ID 8169036, 38 pages, John Wiley & Sons Ltd (invited paper). 10.1155/2018/8169036. (SCOPUS & ESCI) 

10. Hyuk-Jae Roh*, Prasanta K. Sahu, Satish Sharma, Sandeep Datla, and Babak Mehran. (2016) Statistical Investigations of Snowfall and Temperature with Passenger Car and Truck Traffic on Primary Highway in Canada. ASCE Journal of Cold Regions Engineering, Vol. 30, Issue 2,  Article ID 04015006, American Society of Civil Engineers. DOI: 10.1061/(ASCE)CR.1943-5495.0000099. (SCIE) 

9. Hyuk-Jae Roh*, Satish Sharma, and Prasanta K. Sahu. (2016) Modeling Snow and Cold Effects for Classified Highway Traffic Volume. KSCE Journal of Civil Engineering, Vol. 20, Issue 4, pp. 1514-1525, Springer. DOI: 10.1007/s12205-015-0236-0. (SCIE) 

8. Hyuk-Jae Roh*, Satish Sharma, Prasanta K. Sahu, and Sandeep Datla. (2015) Analysis and Modeling of Highway Truck Traffic Volume Variations during Severe Winter Weather Condition in Canada. Journal of Modern Transportation, Vol. 23, Issue 3, pp. 228-239, Springer. DOI: 10.1007/s40534-015-0082-2. (SCOPUS & ESCI) 

7. Hyuk-Jae Roh*, Prasanta k. Sahu, Ata M. Khan, and Satish Sharma. (2015) Relative Efficiency Appraisal of Discrete Choice Modelling Algorithms using Small-Scale Maximum Likelihood Estimator through Empirically Tailored Computing Environment. Journal of Modern Transportation, Vol. 23, Issue 1, pp. 67-79, Springer. DOI: 10.1007/s40534-014-0063-x. (SCOPUS & ESCI) 

6. Prasanta K. Sahu*, Satish Sharma, and Hyuk-Jae Roh. (2014) Estimation of Aggregate Zonal Trips using Univariate and Multivariate Linear Regression Models. NICMAR Journal of Construction Management, Vol. 29, No. 4, pp. 33-39. ISSN 0973-3675. 

5. Hyuk-Jae Roh*, Satish Sharma, and Sandeep Datla. (2014) The Impact of Cold and Snow on Weekdays and Weekend Highway Total and Passenger Cars Traffic Volumes. The Open Transportation Journal, Vol. 8, pp. 62-72, Bentham (invited paper). DOI: 10.2174/1874447801408010062. (SCOPUS) 

4. Hyuk-Jae Roh. (2013) Mode Choice Behavior of Various Airport User Groups for Ground Airport Access. The Open Transportation Journal, Vol. 7, pp. 43-55, Bentham. DOI: 10.2174/1874447820130930002. (SCOPUS) 

3. Hyuk-Jae Roh, Sandeep Datla, and Satish Sharma*. (2013) Effect of Snow, Temperature and Their Interaction on Highway Truck Traffic.  Journal of Transportation Technologies, Vol. 3, No. 1, pp. 24-38, Scientific Research. DOI: 10.4236/jtts.2013.31003 

2. Hyuk-Jae Roh* and Ata M Khan. (2013) Enhancing Algorithmic Base for Discrete Choice Modeling. KSCE Journal of Civil Engineering, Vol. 17, Issue 7, pp. 1798-1809, Springer. DOI: 10.1007/s12205-013-0318-9. (SCIE)

1. Sandeep Datla, Prasanta Sahu*, Hyuk-Jae Roh, and Satish Sharma. (2013) A Comprehensive Analysis of the Association of Highway Traffic with Weather Conditions. Procedia-Social and Behavioral Sciences, Vol. 104, No. 2, pp. 497-506, Elsevier. DOI: 10.1016/j.sbspro.2013.11.143. (SCOPUS)

*corresponding author

• Hyuk-Jae Roh. Free Transit Policy to Protect Air Quality in Windsor, Ontario, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 130, Ilsan, Korea, pp. 79-84, Dec 2008.

• Hyuk-Jae Roh. Green Transportation Initiative in Winnipeg, Manitoba, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 127, Ilsan, Korea, pp. 79-85, Sept 2008.

• Hyuk-Jae Roh. Transportation Planning in the Downtown Area in the City of Vancouver. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 126, Ilsan, Korea, pp. 68-75, Aug 2008.

• Hyuk-Jae Roh. The  GoTime Metro Transit Systems in the Halifax Regional Municipality, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 125, Ilsan, Korea, pp. 72-80, July 2008.

• Hyuk-Jae Roh. The Results of Transit Priority Measures in the City of Ottawa, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 124, Ilsan, Korea, pp. 67-79, Jun 2008.

• Hyuk-Jae Roh. Telebus and Navigo Transit Information System in Winnipeg, Manitoba, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 123, Ilsan, Korea, pp. 76-84, May 2008.

• Hyuk-Jae Roh. Site Design for Improving Sustainable Transportation. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 122, Ilsan, Korea, pp. 72-81, Apr 2008.

• Hyuk-Jae Roh. Urban Transportation Pricing Options. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 120, Ilsan, Korea, pp. 77-87, Feb 2008.

• Hyuk-Jae Roh. Tax Mechanism for Improving Sustainable Transportation. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 119, Ilsan, Korea, pp. 83-91, Jan 2008.

• Hyuk-Jae Roh. Intercity Travel, Environmental, and Infrastructure Maintenance Policy of Ottawa, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 118, Ilsan, Korea, pp. 80-87, Dec 2007.

• Hyuk-Jae Roh. Ridesharing and Parking Policy of the City of Ottawa, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 117, Ilsan, Korea, pp. 85-91, Nov 2007.

• Hyuk-Jae Roh. Travel Demand Forecasting of the City of Ottawa, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 116, Ilsan, Korea, pp. 89-99, Oct 2007.

• Hyuk-Jae Roh. Walking and Cycling Policy of the City of Ottawa, Canada. Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 115, Ilsan, Korea, pp. 76-83, Step 2007.

• Hyuk-Jae Roh. Transit Policy of the City of Ottawa, Canada (2). Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 114, Ilsan, Korea, pp. 88-94, Aug 2007.

• Hyuk-Jae Roh. Transit Policy of the City of Ottawa, Canada (1). Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 113, Ilsan, Korea, pp. 80-87, Jul 2007.

• Hyuk-Jae Roh. Ottawa 20/20 Transportation Master Plan (2). Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 112, Ilsan, Korea, pp. 86-93, Jun 2007.

• Hyuk-Jae Roh. Ottawa 20/20 Transportation Master Plan (1). Monthly Magazine on Transportation Policy, The Korea Transport Institute, Vol. 109, Ilsan, Korea, pp. 78-85, Mar 2007.