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Roadway Engineering Calculators

Explore a collection of roadway engineering calculators to assist with the design, analysis, and maintenance of roads and highways. These tools are essential for civil engineers, transport planners, and construction professionals, helping streamline calculations for pavement thickness, slope, drainage, traffic flow, and more.

Railroad Curve Degree

This calculator helps determine the degree of curvature for railroads based on the curve radius. It’s a key parameter in railway design and alignment, ensuring safe and smooth train movement through curves.

Asphalt Density

This calculator determines the density of asphalt using core sample weights measured in water and air. It’s used in road construction quality control to assess compaction levels and ensure material performance.

Crest Vertical Curve Length

This calculator estimates the minimum required length of a crest vertical curve on roads to ensure sufficient sight distance for safe vehicle operation. It helps highway designers evaluate visibility constraints and alignments based on grades, stopping sight distance, and driver eye/obstruction height.

Cornering Force

This calculator estimates the lateral cornering force acting on a vehicle during a turn, accounting for road slope, mass, friction, and radius of the curve. It also calculates the maximum safe velocity to prevent skidding. Ideal for civil engineers and transportation safety analysts designing safe roadway curves.