2021
DOI: 10.1177/03611981211004961
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Systematic Safety Evaluation of Diverging Diamond Interchanges Based on Nationwide Implementation Data

Abstract: Diverging diamond interchanges (DDIs) are designed as an alternative to the conventional diamond interchanges to enhance operational and safety performance. As the popularity of the DDI is increasing and more DDIs are being constructed and proposed, the need has arisen to measure the actual safety benefits of DDIs as compared with the traditional diamond interchanges. This study evaluates the safety of DDIs using three methods: before–after study with comparison group, Empirical Bayes before–after method, and … Show more

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