Table of Contents
This case study examines the process of enhancing sight distance and curve design in a highway project to improve safety and traffic flow. It highlights the key steps taken and the outcomes achieved during the project.
Project Overview
The project involved redesigning a section of a busy highway where frequent accidents occurred due to limited sight distance and poorly aligned curves. The goal was to optimize the geometric design to ensure safer driving conditions.
Assessment and Planning
Initial assessments included traffic surveys, accident data analysis, and site inspections. Engineers identified critical areas where sight distance was restricted by natural and man-made obstructions. Planning focused on improving curve radii and clearing sightlines.
Design Improvements
The redesign involved increasing curve radii to reduce sharp turns and trimming vegetation or relocating structures obstructing views. Additionally, signage and reflective markers were added to enhance visibility during night and adverse weather conditions.
Implementation and Results
The improvements were implemented over a six-month period. Post-construction evaluations showed a significant reduction in accidents and improved driver comfort. The project demonstrated the importance of geometric design in highway safety.