Recent quasi-experimental commercial motor vehicle (CMV) driver hours-of-service (HOS) studies published through the Federal Motor Carrier Safety Administration (FMCSA) in 2011 readily identified consistent increases in crash odds as driving time increased. These studies identified time-on-task as a significant indicator of ...

The purpose of this two-part project was to respond to gaps in delivering transportation safety education and to develop introductory curriculum materials for both academicians and practitioners. The project objectives included: developing a comprehensive understanding of needs and priorities with regard to safety data ...

It is nationally recognized that commercial motor vehicle (CMV) operators often cannot find adequate and safe parking for rest purposes. This is especially true for the Pacific Northwest, where high-use corridor rest areas are experiencing demand for truck parking that exceeds capacity. These rest areas are intended for ...

The Pacific Northwest region has no data on the assessment and recommendations on rural bridge design and safety subjected to Farm Vehicle (FV) loading. The proposed study will determine how different types of FVs with different characteristics distribute their loads on bridge superstructures. These will be realized through ...

A total of 1,062 left-turn related crashes at signalized intersections in Idaho (2006-2015) were analyzed to document the underlying factors that affect left-turn crashes and to identify crash types that prevail among different driver groups. Comparative analysis was conducted to compare the characteristics of intersections ...

Over five million traffic crashes are reported annually in the United States, and the documentation process for every single crash begins at the scene of the incident with information gathered by a member of the law enforcement community or by a private citizen (NHTSA). This information is subsequently transmitted to a local ...

This research focused on the use of equipment telematics, sensor analytics, and virtual modeling to positively impact construction sites by providing real-time field of view monitoring of the worker-on-foot and by automating safety warnings on the work site. The automation of safety warnings will allow an alert to be delivered ...

Formation factor of fresh cementitious pastes was investigated experimentally as a function of time from initial mixing and mixture design properties such as supplementary cementitious material (SCM) replacement level, water-to-binder ratio (w/cm), and superplasticizer dosage. SCM types included fly ash, slag and silica fume. ...

In this study, three different pavement marking material types were evaluated by using a British Pendulum Tester (BPT) in dry, wet, and icy conditions. The frictional properties were recorded as a British Pendulum Number (BPN). Two different rubber sliders on the BPN were used to compare different pavement marking users: a ...

A significant number of local highway jurisdictions in Idaho lack the engineering expertise and financial resources to conduct detailed assessments when requests are received to increase weight allowances for local roadways beyond the current legal limit for gross load weight of 80,000 pounds. Idaho Code 49-1004A (1) states ...