In this study, multiple linear regression was used to build the 85th percentile speed models for cars, light and heavy commercial vehicles travelling on two-lane two-way rural highway in hilly terrain. Seven sites in total were taken into consideration for the model development. The horizontal curve’s geometric feature and features of the adjacent road section were regarded as independent factors and were used to model the operating speed of the vehicles. It was discovered that the operating speed of the car at a mid-curve depends on the outer shoulder width and the surrounding road segment characteristics. The adjacent nature of road segment and radius determines the speed for LCVs. HCVs speed was influenced by operating speed at exit and inner shoulder width. Importantly, the generated operating speed models could be utilized to assess geometric design as a result. The study demonstrates that road geometric features on hilly terrain affect the highway operating speeds of the vehicles.
Operating Speed Models of Car, LCV and HCV for Two-Lane Two-Way Rural Highway in Hilly Terrain
Lecture Notes in Civil Engineering
International Conference on Sustainable Infrastructure: Innovation, Opportunities and Challenges ; 2023 ; Mangalore, India April 23, 2023 - April 24, 2023
2024-09-06
13 pages
Article/Chapter (Book)
Electronic Resource
English
Operating speed models for two-lane rural highways
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