This study investigates factors contributing to the injury severity of truck-involved work zones crashes in South Carolina (SC). The outcome interest is or property damage only crashes, and explanatory examined include occupant, vehicle, collision, roadway, temporal, environmental characteristics. Two mixed (random parameter) logit models are developed, one for non-interstates with speed limits...

<abstract><p>Vehicle platooning using connected and automated vehicles (CAVs) has attracted considerable attention. In this paper, we address the problem of optimal coordination CAV platoons at a highway on-ramp merging scenario. We present single-level constrained control framework that optimizes fuel economy travel time while satisfying state, control, safety constraints. also exp...

This paper presents a recognition algorithm combining the vehicle detection and the color difference of RGB color space to recognize the brake-lights state of moving vehicles in order to achieve the intelligent-car’s rear-end collision warning about the vehicle in front of it. Firstly, we train and build AdaBoost cascade classifier by haar features samples and scaling sub-windows are used to de...

The collision speed is important in accident analysis, and needle marks can be helpful as the physical evidence. The deceleration impact system has been built to analyze the mechanics of the needle and the gauge plate. Two isolated groups were designed to record the speed values under the same sample labels from real crashes. The visualization platform was built for the first group to collect n...

How formation of the front and rear of a cell are coordinated during cell polarization in migrating cells is not well understood. Time-lapse microscopy of live primary chick embryo heart fibroblasts expressing GFP-actin show that, prior to cell polarization, polymerized actin in the cell body reorganizes to form oriented actin-filament bundles spanning the entire cell body. Within an average of...

results all eight candida species were successfully detected, identified and quantitated based on the icl gene. a seven-log range of the gene copy number and a minimum detection limit of 103 copies were achieved. conclusions a one-tube absolute quantification real-time pcr that differentiates medically important candida species via individual unique melting temperature was achieved. analytical ...

Traffic conflicts are heavily correlated with traffic collisions and may provide insightful information on the failure mechanism factors that contribute more towards a collision. Although proactive management systems have been supported in research community, autonomous vehicles (AVs) soon to become reality, analyses concentrated very specific environments using aggregated data. This study aims...