Because of a growing crash occurrence in conflict areas, the ramp and merge segments on
freeways are a concern for transportation researchers and practitioners. Therefore, short …

The main objective of this study is to design a method for evaluating the reasonability of
ramp spacing of the expressway in a specific district. The study proposes an entropy …

This paper evaluates the traffic safety of freeway interchange merging areas based on the
traffic conflict technique. The hourly composite risk indexes (HCRI) was defined. By the use …

Studies investigating crash rates by roadway classification are few and far between and
even more rare if extended to focus on heavy vehicles. This study explored and compared …

Interchanges are the key nodes of the freeway. Due to the existence of weaving behavior,
the traffic flow situation is more complicated for small spacing interchanges. Continuous …

Ramps provide entrances and exits for residents to conveniently use the freeway service.
Due to the high construction cost and geometric design requirements, the decision of ramp …

Owing to the challenges faced by two-lane entrance ramps in merging areas on
expressways in handling the growing traffic volume, designers are considering …

This is the first place winning paper of the Federal Highway Administration's (FHWA) 2020
Excellence in Highway Safety Data Award, which is designed to encourage university …

The objective of this paper is to compare the performance and tradeoffs between two
alternative analysis methods for developing crash prediction models for severe crashes: a …

The transportation-engineering community is transforming by integrating quantitative
methods into the task development process. This report identifies opportunities to better …