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Keywords: international roughness index
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Journal Articles
Local calibration of safety performance functions for multi-lane rural highways in Sonepat
Available to Purchase
Proceedings of the Institution of Civil Engineers - Municipal Engineer 1–10.
Published: 17 June 2026
..., implying that a 1% increase in traffic leads to ∼1.39% rise in crashes. Heavy-vehicle proportion also showed a significant positive effect, increasing crashes by 2.3% for every 1% increase. Pavement roughness (International Roughness Index) increased crash frequency by 9.3% per 1 m/km rise, while each...
