All Posts

Rate of Vertical Curvature (K) Explained - Civil PE Transportation Exam Concept

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

Andrea R

Oct 24, 20252 min read

Free Civil Transportation PE Practice Exam Problem: Stopping Sight Distance

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

Andrea R

Oct 10, 20252 min read

I Passed the Civil Transportation PE on the First Try - Here’s How I’d Study Differently

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

Andrea R

Sep 12, 20253 min read

Civil Transportation PE Exam Practice Problem: Traffic Control Design

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...

Andrea R

Sep 4, 20251 min read