Type-II dilemma zones are the segment of roadway approaching an intersection where drivers have difficulty deciding to stop or proceed at the onset of the circular yellow (CY) indication. Signalized intersection safety is improved when dilemma zones are correctly identified and steps are taken to reduce the likelihood that vehicles...
This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the National Academy of Sciences and can be found at: https://doi.org/10.3141/2463-01
In many undergraduate engineering programs, students do not synthesize content learned from multiple courses until a capstone senior design course. As an example, in undergraduate civil engineering programs, transportation engineering concepts (e.g., geometric alignment, asphalt design procedures) and geotechnical engineering concepts (e.g., shear strength of soils, soil compaction) are not...
Theories of situated knowledge and research evidence suggest that students are not prepared for the engineering workforce upon graduation from engineering programs. Concept inventory results from diverse fields suggest that students do not understand fundamental engineering, mathematics, and science concepts. These two concerns may result from different knowledge deficiencies; one...
The Type II dilemma zone describes a segment of road on the approach to a signalized intersection where, if occupied by a motorist presented with the circular yellow indication, is likely to result in a motorist having difficulty deciding to stop at the stop line or proceed through the intersection....
The development and widespread implementation of best practices in transportation engineering classrooms is important in attracting and retaining the next generation of transportation engineers. Engineering education professionals have uncovered many best practices in the field; however, the process of effectively disseminating and ultimately achieving the widespread adoption of these best...
Previous research has found that distracted driving measurably increases driver response
times to unanticipated roadway hazards. These instances are of particular consequence as they
tend to be highly correlated with vehicle crashes resulting in property damage and/or injury.
However, comparatively little attention has been allocated to quantifying the negative impacts...
Transportation engineering is a critical subdiscipline of the civil engineering profession as indicated by its inclusion on the Fundamentals of Engineering Examination, its overlap with other specialty areas of civil engineering, and as recognized by the Transportation Research Board, Institute of Transportation Engineers, and the American Society of Civil Engineers....
This dataset provides the observations used to answer questions of interest regarding how intersection and traffic characteristics impact the frequency and severity of bicycle-vehicle conflicts as part of the field data analysis portion of the study titled "SPR 833 Intersection Treatments and Bicyclist Safety." Parameters such as bicycle-vehicle conflicts (measured...
This data contains the survey responses used to explore the safety and user perceptions of auxiliary bike lanes as posed in “SPR869 – Safety and User Perceptions of Auxiliary Bike Lanes.” Data includes two datasets corresponding to each survey by user perspective: drivers and cyclists. In each data set are...
