Abstract: The comfort threshold is one of the basic controls in designing horizontal alignment. Some studies have implied that the recommended comfort thresholds are conservative because they were determined using the traditional ...

Abstract: Previous interchange safety research has primarily focused on crash and operating speed prediction models, with no extensive evaluation related to the impact of different ramp types on lateral acceleration. The objective ...

Abstract: The geometric elements of the road, such as tangents and curves, play a vital role in road safety because significant crashes are reported on the horizontal curves and tangent-to-curve transitions. Literature reveals that ...

Abstract: Speed prediction models are commonly developed using maximum and minimum operating speeds measured at or within specific locations on the tangents and horizontal curves, respectively. However, the actual distribution of ...