Evaluation of Diverging Diamond Interchanges in the U.S.

摘要

DDI introduces significantly improvements on traffic operation at congested diamond interchanges Users adopt to the un-conventional design without much difficult Preliminary safety results encouraging DDI is extremely cost effective (retrofit or new construction), and is compatible with complete street concept FHWA, NCHRP, consultants, and State DOTs are exploring solutions to problems limiting DDI's capacity utilization, and the results are expected to be field tested soon.