M. Sarhan, Y. Hassan

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Pages: 37-48

This paper presents a probabilistic highway geometric design approach while focusing on the sight distance design basis. Such a probabilistic approach utilizes the reliability analysis to calculate the probability of hazard, which is equal to the probability of a driver having a required stopping sight distance greater than what is actually available. The approach takes into account the variation in the design parameters to provide a safe design for the majority of road users. An application example is presented to demonstrate the applicability of the probabilistic approach in both two-dimensional and three-dimensional types of analysis.

Keywords: reliability analysis; sight distance; combined alignment

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