CST Level 1 Land Surveyor Certification Practice

What is one characteristic of a reverse curve?

1. Consists of two simple arcs with different radius

2. Features a straight line segment between two curves

3. Is used predominantly in urban areas

4. Only used on steep hills

The correct answer is: Consists of two simple arcs with different radius

A reverse curve is defined as a type of horizontal curve that consists of two arcs that curve in opposite directions. This characteristic is fundamental to the design of roadways and railways, where such curves can be employed to align with the natural topography or to enhance the aesthetics of the route. The two arcs typically feature different radii, allowing for a smooth transition from one direction to another. This design can improve vehicle flow and reduce the sharpness of turns, contributing to safer navigation for traffic. The other choices do not accurately describe a reverse curve. While straight line segments between two curves are related to compound curves rather than reverse curves, the suggestion of predominant use in urban areas is too broad since reverse curves can also be utilized in rural contexts. Additionally, the assertion that reverse curves are only suitable for steep hills does not hold, as they can be effectively implemented on flatter terrain as well. Understanding the defining attributes of reverse curves will aid in recognizing their applications in land surveying and civil engineering design.