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J. Ivan · SciRah

Researcher profile · Semantic Scholar

J. Ivan

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J. Ivan — researcher profile on SciRah

h-index: 26
Works: 124
Citations: 3,888

Most-cited papers

Poisson, Poisson-gamma and zero-inflated regression models of motor vehicle crashes: balancing statistical fit and theory.
D. Lord, S. Washington, J. Ivan
2005Accident Analysis and Prevention936 citations
Semantic Scholar
Factors influencing injury severity of motor vehicle-crossing pedestrian crashes in rural Connecticut.
Sylvia S. Zajac, J. Ivan
2003Accident Analysis and Prevention310 citations
Semantic Scholar
Selecting exposure measures in crash rate prediction for two-lane highway segments.
Xiao Qin, J. Ivan, N. Ravishanker
2004Accident Analysis and Prevention283 citations
Semantic Scholar
Further notes on the application of zero-inflated models in highway safety.
D. Lord, S. Washington, J. Ivan
2007Accident Analysis and Prevention266 citations
Semantic Scholar
Hierarchical Bayesian Estimation of Safety Performance Functions for Two-Lane Highways Using Markov Chain Monte Carlo Modeling
Xiao Qin, J. Ivan, N. Ravishanker, Jie-Feng Liu
200594 citations
Semantic Scholar
Effects of Geometric Characteristics on Head-On Crash Incidence on Two-Lane Roads in Connecticut
Chen Zhang, J. Ivan
200591 citations
Semantic Scholar
Multivariate poisson lognormal modeling of crashes by type and severity on rural two lane highways.
Kai Wang, J. Ivan, N. Ravishanker, Eric D. Jackson
2017Accident Analysis and Prevention82 citations
Semantic Scholar
Crash Prediction Models for Intersections on Rural Multilane Highways
T. Jønsson, J. Ivan, Chen Zhang
200768 citations Open access
Semantic Scholar
Estimating Pedestrian Exposure Prediction Model in Rural Areas
Xiao Qin, J. Ivan
200166 citations
Semantic Scholar
Bayesian estimation of hourly exposure functions by crash type and time of day.
Xiao Qin, J. Ivan, N. Ravishanker, Junfeng Liu +1 more
2006Accident Analysis and Prevention62 citations
Semantic Scholar
Fast Bayesian inference for modeling multivariate crash counts
V. Serhiyenko, Sha-Ma A. Mun, J. Ivan, N. Ravishanker
201659 citations
Semantic Scholar
Analysis of driver and passenger crash injury severity using partial proportional odds models.
James Mooradian, J. Ivan, N. Ravishanker, Shan Hu
2013Accident Analysis and Prevention58 citations
Semantic Scholar
Analysis of Factors Affecting the Severity of Head-On Crashes
Zu-Xuan Deng, J. Ivan, P. Gårder
200656 citations
Semantic Scholar
New Approach for Including Traffic Volumes in Crash Rate Analysis and Forecasting
J. Ivan
200456 citations
Semantic Scholar
Safety effects of exclusive and concurrent signal phasing for pedestrian crossing.
Yao-Hua Zhang, Ma-Mun Sha, J. Ivan, N. Ravishanker +1 more
2015Accident Analysis and Prevention44 citations
Semantic Scholar
Designing Roads that Guide Drivers to Choose Safer Speeds
J. Ivan, N. Garrick, G. Hanson
200944 citations
Semantic Scholar
Copula-Based Joint Model of Injury Severity and Vehicle Damage in Two-Vehicle Crashes
Kai Wang, Shamsunnahar Yasmin, K. Konduri, Naveen Eluru +1 more
201542 citations
Semantic Scholar
Methodology to predict the safety performance of rural multilane highways [Final Report for NCHRP Project 17-29]
D. Lord, S. Geedipally, B. Persaud, S. Washington +4 more
200839 citations
Semantic Scholar
Differences in the Performance of Safety Performance Functions Estimated for Total Crash Count and for Crash Count by Crash Type
T. Jønsson, C. Lyon, J. Ivan, S. Washington +2 more
200937 citations
Semantic Scholar
A Statistical Analysis of the Effect of Wet-Pavement Friction on Highway Traffic Safety
J. Ivan, N. Ravishanker, Eric D. Jackson, B. Aronov +1 more
201231 citations
Semantic Scholar
A study of pedestrian compliance with traffic signals for exclusive and concurrent phasing.
J. Ivan, K. Mckernan, Yao-Hua Zhang, N. Ravishanker +1 more
2017Accident Analysis and Prevention28 citations
Semantic Scholar
Developing Safety Performance Function for Freeways by considering Interactions between Speed Limit and Geometric Variables
M. Islam, J. Ivan, N. Lownes, R. Ammar +1 more
201426 citations
Semantic Scholar
Long-Term Safety Trends as a Function of Vehicle Ownership in 26 Countries
A. Borsos, C. Koren, J. Ivan, N. Ravishanker
201225 citations
Semantic Scholar
Explaining Pedestrian Safety Experience at Urban and Suburban Street Crossings Considering Observed Conflicts and Pedestrian Counts
Md. Saidul Islam, V. Serhiyenko, J. Ivan, N. Ravishanker +1 more
201423 citations
Semantic Scholar
FINDING STRATEGIES TO IMPROVE PEDESTRIAN SAFETY IN RURAL AREAS
J. Ivan, P. Gårder, Sylvia S. Zajac
200123 citations
Semantic Scholar
Temporal modeling of highway crash counts for senior and non-senior drivers.
Shan Hu, J. Ivan, N. Ravishanker, James Mooradian
2013Accident Analysis and Prevention22 citations
Semantic Scholar
Statistical challenges with modeling motor vehicle crashes: Understanding the implications of alternative approaches
D. Lord, S. Washington, J. Ivan
200422 citations
Semantic Scholar
Predicting Segment-Intersection Crashes with Land Development Data
S. Bindra, J. Ivan, T. Jønsson
200921 citations
Semantic Scholar
Leveraging probe data to model speeding on urban limited access highway segments: Examining the impact of operational performance, roadway characteristics, and COVID-19 pandemic
Ennis Marshall, M. Shirazi, A. Shahlaee, J. Ivan
2023Accident Analysis and Prevention20 citations Open access
Semantic Scholar
Evaluation of hot spot identification methods for municipal roads
Kai Wang, Shanshan Zhao, J. Ivan, I. Ahmed +1 more
2018Journal of Transportation Safety & Security19 citations
Semantic Scholar
Evaluation of Safety Benefits and Potential Crash Migration Due to Shoulder Rumble Strip Installation on Connecticut Freeways
Erika B. Smith, J. Ivan
200519 citations
Semantic Scholar
Modeling the impact of the COVID-19 pandemic on speeding at rural roadway facilities in Maine using short-term speed and traffic count data
A. Shahlaee, M. Shirazi, Ennis Marshall, J. Ivan
2022Accident Analysis and Prevention18 citations Open access
Semantic Scholar
Dynamic compositional modeling of pedestrian crash counts on urban roads in Connecticut.
V. Serhiyenko, J. Ivan, N. Ravishanker, Md. Saidul Islam
2014Accident Analysis and Prevention18 citations
Semantic Scholar
Variation in Free-Flow Speed due to Roadway Type and Roadside Environment
G. Hansen, N. Garrick, J. Ivan, T. Jønsson
200718 citations
Semantic Scholar
Case–Based Reasoning for Assessing Intelligent Transportation Systems Benefits
A. Sadek, S. Morse, J. Ivan, W. ElDessouki
200317 citations Open access
Semantic Scholar
Identifying association between pedestrian safety interventions and street-crossing behavior considering demographics and traffic context
Ma-Mun Sha, Franklin Caraballo, J. Ivan, N. Ravishanker +2 more
2018Journal of Transportation Safety & Security15 citations
Semantic Scholar
Predicting local road crashes using socioeconomic and land cover data
Kai Wang, J. Ivan, A. Burnicki, Sha-Ma A. Mun
201715 citations
Semantic Scholar
Considering demographics of other involved drivers in predicting the highest driver injury severity in multi-vehicle crashes on rural two-lane roads in California
Md Julfiker Hossain, J. Ivan, Shanshan Zhao, Kai Wang +3 more
2022Journal of Transportation Safety & Security14 citations
Semantic Scholar
Left-Turn Gap Acceptance Behavior of Elderly Drivers at Unsignalized Intersections
Hongmei Zhou, N. Lownes, J. Ivan, P. Gårder +1 more
201514 citations
Semantic Scholar
Safety Effects of Exclusive Left-Turn Lanes at Unsignalized Intersections and Driveways
Hongmei Zhou, J. Ivan, A. Sadek, N. Ravishanker
201014 citations
Semantic Scholar
Collision Type Categorization Based on Crash Causality and Severity Analysis
Chen Zhang, J. Ivan, T. Jønsson
200714 citations
Semantic Scholar
The Effect of Segment Characteristics on the Severity of Head-on Crashes on Two-Lane Rural Highways
J. Ivan, P. Gårder, Zu-Xuan Deng, Chen Zhang
200614 citations
Semantic Scholar
Gap acceptance for left turns from the major road at unsignalized intersections
Hongmei Zhou, J. Ivan, P. Gårder, N. Ravishanker
201413 citations Open access
Semantic Scholar
Incorporating Demographic Proportions into Crash Count Models by Quasi-Induced Exposure Method
Sadia Sharmin, J. Ivan, Shanshan Zhao, Kai Wang +3 more
202011 citations
Semantic Scholar
USING RELATIVE RISK ANALYSIS TO IMPROVE CONNECTICUT FREEWAY TRAFFIC SAFETY UNDER ADVERSE WEATHER CONDITIONS
W. ElDessouki, J. Ivan, E. Anagnostou, A. Sadek +1 more
200411 citations
Semantic Scholar
ESTIMATING BENEFITS FROM SPECIFIC HIGHWAY SAFETY IMPROVEMENTS: PHASE III, SAFETY BENEFITS FROM LEFT TURN TREATMENT
N. Garrick, J. Ivan, J. Rimiller
200311 citations
Semantic Scholar
Safety Benefits of Intersection Approach Realignment on Rural Two-Lane Highways
Fei Yuan, J. Ivan, Xiao Qin, N. Garrick +1 more
200111 citations
Semantic Scholar
Integrating equilibrium assignment in game-theoretic approach to measure many-to-many transportation network vulnerability
Qixing Wang, L. Fiondella, N. Lownes, J. Ivan +3 more
2011IEEE International Conference on Technologies for Homeland Security10 citations
Semantic Scholar
A Procedure For Allocating Zonal Attributes To A Link Network In A GIS Environment
T. Jønsson, Zu-Xuan Deng, J. Ivan
200610 citations
Semantic Scholar
TRAFFIC CALMING OF STATE HIGHWAYS: APPLICATION NEW ENGLAND
P. Gårder, J. Ivan, Jian-He Du
200210 citations
Semantic Scholar

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