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What Is the Rate of Vertical Curvature (K)? The rate of vertical curvature (K)  is an important concept to understand before taking the Civil PE Transportation depth exam . It measures how smooth a roadway’s vertical curve transitions between two different grades. The formula for K is: Rate of vertical curvature formula Where: L  = length of curve (ft) A  = algebraic difference in grades (%) In simpler terms, K represents the length of curve per 1% change in grade . A higher

A topic you might encounter on the Civil PE Transportation Exam is stopping sight distance (SSD) . It may show up tied to vertical or...

When I sat down for the Civil Transportation PE exam, I thought I was prepared. Eight hours later, I walked out tired but relieved,...

One of the best ways to get ready for the Civil PE Transportation Exam is by working through practice problems that mirror what you’ll...