Analysis of Vehicle Speed Patterns on Urban Arterial Roads: A Case Study of Satdobato-Budhanilkantha Section

https://doi.org/10.46610/JoTS.2026.v011i01.004

Abstract

Urban arterial roads in developing cities frequently encounter challenges related to speeding and traffic safety, stemming from mixed traffic conditions, inadequate enforcement, and suboptimal road design. This study analyses vehicle speed patterns on the Satdobato-Budhanilkantha arterial road in Kathmandu Valley, Nepal, using spot speed data collected via radar guns across six segments. The research examines speed distributions for dominant vehicle types (cars, motorcycles, and buses), evaluates compliance with speed limits, and identifies high-risk zones where speeding correlates with accident propensity. Key findings reveal that motorcycles exhibit the highest average speeds (56.2km/h), particularly in the Maharajgunj-Budhanilkantha section, where 85th percentile speeds exceed safe limits. In contrast, buses demonstrate more regulated speeds (avg. 32.4km/h), though erratic speed variations are observed near intersections. Spatial analysis using GIS highlights critical segments requiring traffic calming measures, such as enhanced signage, speed bumps, and stricter enforcement. The study highlights the need for context-sensitive speed management strategies in urban arterial roads to strike a balance between mobility and safety in rapidly motorising cities. These insights can inform policymakers and transport planners in Nepal and similar regions to mitigate speed-related crash risks.