Nearly every PE Civil Transportation guide quotes a single blended pass rate, if it mentions one at all. NCEES actually publishes first-time and repeat-taker numbers separately, and the gap between them — 61% versus 43% — tells you something the blended number hides: whatever didn't work the first time tends to not get fixed on the second attempt either, unless the candidate changes their preparation strategy. This guide breaks down the real domain weights and that pass-rate gap so you can prepare (or re-prepare) deliberately.
Exam Format & Eligibility
| Detail | Specification |
|---|---|
| Total Questions | 80 |
| Exam Time | 8 hours (within a 9-hour total appointment, including a 50-minute scheduled break, 8-minute tutorial, and 2-minute NDA) |
| Format | Computer-based testing (CBT), closed-book with searchable electronic references |
| Reference Material | NCEES PE Civil Reference Handbook plus specified design standards, provided electronically during the exam |
| Units | Both SI (metric) and US Customary System — expect problems in either |
| Experience Requirement | Minimum 4 years of post-college work experience in your engineering discipline |
| Exam Fee | $400 (paid to NCEES; some state boards charge additional application fees) |
| Availability | Year-round, by appointment |
The Pass Rate Gap Nobody Talks About
Based on the most recent published data:
| Candidate Group | Examinees | Pass Rate |
|---|---|---|
| First-time takers | 1,929 | 61% |
| Repeat takers | 1,097 | 43% |
That's an 18-point drop for candidates on their second (or later) attempt. This isn't necessarily because repeat takers are less capable — it's often because they re-study the same way they did the first time, without diagnosing which specific knowledge areas cost them the most points. If you're retaking this exam, the highest-leverage thing you can do isn't more generic review — it's getting your diagnostic score report and targeting the weakest domain specifically, the same principle that applies across most NCEES PE exams.
The 10 Knowledge Areas (Exact Question Ranges)
| Knowledge Area | Questions | % of Exam |
|---|---|---|
| Traffic Engineering | 10–15 | 12.5–18.8% |
| Horizontal Design | 8–12 | 10–15% |
| Vertical Design | 8–12 | 10–15% |
| Drainage | 8–12 | 10–15% |
| Roadside & Cross-Section Design | 7–11 | 8.8–13.8% |
| Intersection Geometry | 7–11 | 8.8–13.8% |
| Geotechnical & Pavement | 6–9 | 7.5–11.3% |
| Project Management | 6–9 | 7.5–11.3% |
| Traffic Signals | 5–8 | 6.3–10% |
| Traffic Control Design | 5–8 | 6.3–10% |
Notice the top four knowledge areas — Traffic Engineering, Horizontal Design, Vertical Design, and Drainage — can together account for over half the exam at their upper bounds (up to roughly 44 of 80 questions). If your study time isn't weighted toward these four areas first, you're likely under-preparing for the bulk of the exam regardless of how well-rounded your review feels.
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Domain-Weighted Study Plan
Build your prep time around question volume, not domain count:
- Traffic Engineering (up to 18.8%). The single largest domain. Prioritize capacity analysis, level-of-service calculations, and signal warrant concepts.
- Horizontal and Vertical Design (up to 15% each). These two geometric design domains together can be nearly a third of the exam. Drill curve calculations — both horizontal (superelevation, sight distance around curves) and vertical (crest/sag curve design, stopping sight distance) — until they're fast and automatic, since CBT time pressure punishes slow manual calculation.
- Drainage (up to 15%). Culvert design, storm drainage systems, and hydraulic calculations. Don't treat this as a minor topic just because it sounds separate from "transportation" — it's weighted the same as vertical design.
- Roadside/Cross-Section and Intersection Geometry (up to 13.8% each). Clear zone design, cross-section elements, and intersection sight-distance/geometric design round out the geometric-design cluster.
- Geotechnical & Pavement and Project Management (up to 11.3% each). Pavement design methodology and standard project management/contract concepts.
- Traffic Signals and Traffic Control Design (up to 10% each, smallest domains). Still worth dedicated review sessions, but appropriately lower priority given the smaller question count.
Since the exam allows electronic reference material, practice navigating the NCEES PE Civil Reference Handbook itself during your prep — knowing where a formula lives and how fast you can find it under time pressure is a skill in itself, not something to figure out for the first time on exam day.
Sample PE Civil Transportation Exam Questions
Question 1 (Domain: Horizontal Design)
A horizontal curve has a design speed of 60 mph and a maximum superelevation rate of 8%. Using standard AASHTO design values, which factor MOST directly limits the minimum radius that can be used for this curve?
- A. The posted speed limit of adjacent tangent sections
- B. The maximum allowable superelevation and assumed side friction factor at the design speed
- C. The number of travel lanes on the roadway
- D. The vertical grade of the roadway profile
Correct Answer: B. Minimum horizontal curve radius is governed by the design speed, the maximum superelevation rate, and the side friction factor assumed safe at that speed — per the standard AASHTO minimum radius formula. Posted speed limits (A), lane count (C), and vertical grade (D) are not direct inputs to the minimum radius calculation itself.
Question 2 (Domain: Vertical Design)
A crest vertical curve is being designed to provide adequate stopping sight distance (SSD) for a given design speed. Which two variables have the greatest direct impact on the minimum curve length required?
- A. Algebraic difference in grades and required stopping sight distance
- B. Pavement type and posted speed limit
- C. Number of lanes and shoulder width
- D. Traffic volume and time of day
Correct Answer: A. Crest vertical curve length for stopping sight distance is a function of the algebraic difference in the two intersecting grades (A) and the required SSD for the design speed, per standard AASHTO crest curve design formulas. Pavement type, lane count, and traffic volume (B, C, D) are not direct inputs to the minimum curve length calculation.
Question 3 (Domain: Drainage)
A culvert is being sized to convey the design storm flow beneath a roadway embankment. Which condition indicates the culvert may be operating under inlet control rather than outlet control?
- A. The culvert barrel is flowing full for its entire length
- B. The headwater depth is governed primarily by the culvert entrance geometry rather than downstream conditions
- C. The tailwater elevation exceeds the culvert crown
- D. The culvert slope is flatter than the natural stream slope
Correct Answer: B. Inlet control occurs when the culvert's capacity is limited by how much water the entrance can accept, meaning headwater depth is governed by entrance geometry rather than barrel friction or downstream tailwater conditions. A full-flowing barrel (A) and high tailwater (C) are more indicative of outlet control, where downstream conditions and barrel friction govern capacity instead.
Final Verdict
The PE Civil Transportation exam rewards candidates who weight their prep to match the actual question distribution — Traffic Engineering, Horizontal Design, Vertical Design, and Drainage together can make up over half the exam, and neglecting any one of them for a "smaller" domain like traffic signals is a common miscalculation. If you're retaking the exam, don't just repeat your first study plan: the 43% repeat-taker pass rate versus 61% for first-timers suggests that whatever gap existed the first time often persists without a genuinely different approach. Use your diagnostic score report, target the specific knowledge area that cost you the most points, and practice navigating the electronic reference handbook under real time pressure before test day.
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