2022
DOI: 10.1177/03611981221078288
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Incorporating Horizontal Curves and Roadway Geometry into the Automated Updated Grade Severity Rating System

Abstract: Highway agencies all around the country, including the Wyoming Department of Transportation (WYDOT), have deep concerns about truck crashes resulting from brake temperatures exceeding the critical brake temperature as they descend steep downgrades. Through a series of research initiatives starting in the 1980s, WYDOT has developed a Grade Severity Rating System (GSRS) to estimate the maximum safe speed for trucks during downgrade descent. In 2020, the updated mathematical model was automated through an interac… Show more

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(1 citation statement)
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“…Sometimes, road conditions [28] and vehicle types [29] are also included in the prediction model. Meanwhile, many studies have found that horizontal bend radius has a critical effect on truck crashes [30][31][32]. However, the driver factor, which has the most significant impact on the collision, is often ignored by researchers [33,34] because the current vehicle trajectory data collection is mainly based on loop detectors [24,[35][36][37] and videos taken by various means [19,20,38].…”
Section: Collision Prediction Based On Traffic Conflict Measuresmentioning
confidence: 99%
“…Sometimes, road conditions [28] and vehicle types [29] are also included in the prediction model. Meanwhile, many studies have found that horizontal bend radius has a critical effect on truck crashes [30][31][32]. However, the driver factor, which has the most significant impact on the collision, is often ignored by researchers [33,34] because the current vehicle trajectory data collection is mainly based on loop detectors [24,[35][36][37] and videos taken by various means [19,20,38].…”
Section: Collision Prediction Based On Traffic Conflict Measuresmentioning
confidence: 99%