PE Transportation case studies
PE Transportation · Put your knowledge to work in context.
The Principles and Practice of Engineering (PE) Civil: Transportation exam is one of the NCEES PE examinations, offered in the Civil: Transportation discipline. It tests for a minimum level of competency in transportation engineering and is designed for engineers who have gained a minimum of four years of post-college work experience in their chosen engineering discipline. The PE Transportation case studies are 5 cases and about 4,844 words.
1Four Protected Left-Turn Phases on a 90-Second Cycle
A four-leg signalized intersection of a four-lane major street (two through lanes plus a dedicated left-turn lane on every approach, 12-ft lanes) and a two-lane minor street runs a 90-s cycle with four protected left-turn phases. PM peak-hour volumes are: eastbound 1,380 vph (180 left), westbound 1,240 (150 left), northbound 620 (120 left from a dedicated left lane), southbound 540 (90 left from a dedicated left lane).
889 words, about 4 min2An Existing Curve That Cannot Meet Its Posted Speed or Its Sight Distance
A 1.8-mi rural two-lane highway (12-ft lanes, 6-ft shoulders) contains a horizontal curve on an 800-ft radius with 4 percent superelevation. Agency policy allows up to 8 percent maximum superelevation.
946 words, about 5 min3An Applicant's Trip Generation and a Corridor That Fails Without the Project
A developer proposes 250 single-family detached units, 40,000 sq ft of neighborhood retail, and 60,000 sq ft of office on 42 acres at the suburban edge of a city. Locally calibrated vehicle trip rates are: single-family 9.5 daily / 0.75 AM peak / 0.95 PM peak per unit; retail 45 daily / 1.2 AM / 3.5 PM per 1,000 sq ft; office 11 daily / 1.5 AM / 1.5 PM per 1,000 sq ft.
998 words, about 5 min4Empirical-Bayes Screening of a Four-Lane Undivided Arterial
A 1.10-mi segment of a four-lane undivided suburban arterial (35 mph, 12,500 vpd, 12-ft lanes, no median, curb and gutter, signalized intersections at both ends, 14 unsignalized driveways) recorded 47 reported crashes in five years (2018-2022): 2 fatal, 9 incapacitating, 14 minor injury, 22 property-damage-only. Crash typing shows 16 angle, 9 left-turn-opposing, 8 rear-end, 6 fixed-object, 8 other.
1,017 words, about 5 min5A Pavement Structure That Does Not Add Up to the Required Structural Number
A new four-lane divided arterial is to be designed for 20 years with a design ESAL of W18 = 12.0 million in the design lane. Subgrade resilient modulus is 5,000 psi.
994 words, about 5 min