The 7th edition of the American Association of State Highway and Transportation Officials (AASHTO) “Green Book” on geometric street design introduced the concept of context-based classification of roadways. This webinar will describe the experiences and lessons learned by various state transportation agencies that may be valuable to others who are seeking to implement context-based classification.
Data shows that fatal crashes involving impaired drivers often include higher blood alcohol concentrations, prior driving convictions, and more than one impairing substance. These behaviors often point to an underlying symptom of substance use disorders, which require individualized treatment to address specific needs. This webinar will share a Safe System approach to understand the multifaceted nature of substance abuse and mental health disorders to inform effective and lasting change that saves lives.
Adjacent precast concrete box beams for short- and medium-span bridges are an economical solution. A recurring problem, however, is cracking in the grouted joints between adjacent beams. This webinar will share recent research on ways to prevent leakage in joints of adjacent box girder bridges.
The recently published ACRP Research Report 244: Advancing the Practice of State Aviation System Planning provides guidance to stakeholders involved in the development of a state aviation system plan (SASP). This webinar will present guidance and key information to scope, develop, and implement a comprehensive SASP that can better reflect emerging trends, optimize increasingly limited resources, emphasize roles and responsibilities in managing state aviation systems, and meet the unique needs of each state.
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