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- W622386843 abstract "This paper presents an investigation of rural and suburban expressway intersection safety in Nebraska. The authors collected data on 41 at-grade, two-way stop controlled and signalized expressway intersections for the period of 1988-2000. A variety of sources including as-built design plans, photo-logs, aerial photos, traffic engineering studies, traffic counts, speed plats (maps indicating speed limits), and crash records were used to construct a rich database. New expressway intersections were constructed in Nebraska over the course of the study duration. These were included in the database once their construction was completed. The database resembles a panel in which new observational units are added over the course of the study period. Analysis of the database consisted of modeling crash frequency on major and minor approaches using the random effects negative binomial approach, while controlling for temporal effects by using time-specific dummy variables. The modeling effort controlled for overdisperssion in the data, spatial (group-wise) and time effects. Combined and separate models for major and minor approaches were formulated. Modeling results indicated that total traffic volume (exposure) and certain roadway geometric characteristics were influential in crashes on major and minor intersection approaches. The authors discuss limitations of the research and suggest improvements for the future." @default.
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- W622386843 date "2006-01-01" @default.
- W622386843 modified "2023-09-27" @default.
- W622386843 title "Crash Analysis of Expressway Intersections in Nebraska" @default.
- W622386843 hasPublicationYear "2006" @default.
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