Shrestha, P., & Marsani , A. (2026). Modelling Safety Performance Functions and Assessing Highway Safety Manual (HSM) Prediction Models for Four-Lane Undivided Arterials – A Case Study of Kathmandu District. International Journal on Engineering Technology and Infrastructure Development, 2(2), 72–90. https://doi.org/10.3126/injet-indev.v2i2.95702