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Updating Safety Performance Functions for Data-Driven Safety Analysis

Sponsor: NAS/Transportation Research Board/University of Central Florida

Authors: John N Ivan

2019-08-01 - 2022-01-31

Social Network Effects of Attitudes about Pedestrian Street Crossing Behavior

Sponsor: DOT/Department of Transportation/Massachusetts Institute of Technology

Authors: John N Ivan

Funding: $264,025

2014-06-01 - 2017-12-31

NCHRP 17-119 Conflict-Based Crash Prediction Method for Intersections

Sponsor: NAS/Transportation Research Board

Authors: John N Ivan

2023-08-01 - 2026-01-31

Quantifying Exposure-Based Crash Rates of Newly-Licensed Drivers in Relation to Age at Licensure

Sponsor: AAA Foundation for Traffic Safety

Authors: John N Ivan

2018-01-08 - 2019-06-30

Spatio-Temperal Modeling of Weather and Road Surface Temperature

Sponsor: DOT/Department of Transportation/Massachusetts Institute of Technology

Authors: John N Ivan

2008-09-01 - 2009-08-31

Pedestrian and Bicycle Safety Performance Functions for the Highway Safety Manual

Sponsor: National Academies/University of Michigan

Authors: John N Ivan

2017-07-01 - 2019-06-30

Guidelines on the Use of Auxillary Through Lanes at Signalized Intersections

Sponsor: NAS/Transportation Research Board

Authors: John N Ivan

2009-07-01 - 2011-06-30

NCHRP Synthesis 20-05/Topic 46-02 Roundabout Design, Operations and Safety Practices

Sponsor: NAS/Transportation Research Board

Authors: John N Ivan

2014-08-23 - 2015-06-30

Estimation of Local Road AADT Using Demographic, Land Development and Geospatial Data

Sponsor: DOT/Department of Transportation/University of North Carolina, Charlotte

Authors: John N Ivan

2018-10-01 - 2019-09-30

A Bi-National Research and Educational Cooperation in Statistical Forecasting of Travel Demand

Sponsor: DOS/Department of State/Council for International Exchange of Scholars

Authors: John N Ivan

2004-08-01 - 2006-07-31

Safety and Operational Evaluation of Yellow LED Border Pedestrian Signals

Sponsor: CT Department of Transportation

Authors: John N Ivan

2019-09-01 - 2021-08-31

BTS-22: Guidelines for Selecting Communication Channels to Deliver Traffic Safety Messaging

Sponsor: National Academies

Authors: John N Ivan

2022-07-01 - 2025-06-30

NCHRP 07-30: Methods of Assigning Short-Duration Traffic Volume Counts to Adjustment Factor Groups for Estimating AADT

Sponsor: NAS/TRB/National Cooperative Highway Research Program (NCHRP)

Authors: John N Ivan

2021-07-01 - 2023-12-31

Safety Assessment of New England Roadways during the Covid-19 Pandemic

Sponsor: Advanced Bridge Construction Technologies/University of Maine

Authors: John N Ivan

2020-09-15 - 2021-09-14

Warrants for Exclusive Left Turn Lanes at Unsignalized Intersections-Phase 2

Sponsor: DOT/Federal Highway Administration (FHA)/New England Transportation Consortium

Authors: John N Ivan

Funding: $5,582

2007-11-23 - 2008-07-31

Real-Time Signal Control Optimization of Diamond Interchanges Based on Loop Detectors

Sponsor: DOT/Federal Highway Administration (FHA)/New England Transportation Consortium

Authors: John N Ivan

2007-09-01 - 2008-08-31

NCHRP 03-142, Evaluating the Impacts of Real-Time Warnings and Variable Speed Limits on Safety and Travel Reliability during Weather Events

Sponsor: DOT/Federal Highway Administration (FHA)/National Academy of Sciences

Authors: John N Ivan

Funding: $400,000

2022-08-04 - 2025-08-04

Understanding and Communicating Reliability of Crash Prediction Models

Sponsor: National Academy of Engineers/CH2M Hill

Authors: John N Ivan

2016-07-01 - 2018-12-31

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