Design of Street Intersections. Classification and Design Requirements

This document outlines comprehensive technical guidelines for the planning and geometric design of urban street intersections. It establishes standardized procedures to ensure safety, efficiency, and accessibility within road networks. The scope includes criteria for layout configurations, traffic flow management, and the integration of pedestrian and non-motorized transport facilities. Specific attention is given to minimizing conflict points and optimizing sight distances for various vehicle types. The text provides detailed methodologies for designing turning radii, lane widths, and pedestrian refuge areas to accommodate different traffic volumes. Furthermore, it addresses the alignment of signals and signage placement to enhance driver awareness. The guidelines serve as a technical reference for civil engineers and urban planners involved in infrastructure projects. By adhering to these specifications, designers can create road environments that prioritize user safety while maintaining smooth traffic operations. The document covers both new construction projects and modifications to existing junctions, ensuring consistency in national road development practices.