California CSLB C-31 — Traffic Control Exam Prep

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Your access starts when you do: the days begin the first time you open the course, not at checkout (or 14 days after purchase, whichever comes first).

Business & Law is 75% off with this classification. Add it only if you want it, for the same term: $24.75 for 30 days, $32.25 for 60 days, $42.25 for 90 days.

Official sitting

California CSLB C-31 Traffic Control exam at a glance

The California CSLB C-31 Traffic Control exam has a time limit of 3 hours 30 minutes, and it is closed book. CSLB also requires a separate Law and Business exam. Figures are from CSLB’s published exam information.

Time3 hours 30 minutes

Confirm question count, time, open-book rules, and passing score on the live board bulletin before you sit. We do not guarantee a passing result. Source: CSLB C31StudyGuide.pdf (on/after 2/1/2024). How we source exam facts

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What’s included

19,000+ word study guide

Worked calculations, code-section breakdowns, exam traps, a key-terms glossary and a 30/60/90-day plan.

5 full-length practice exams

Original questions weighted to match the topic mix of the real exam.

500 practice questions

Every one with a written explanation and the code section behind the answer.

Same study guide and four exams on every term. You are choosing how long you can log in.

Instant accessSecure checkoutBuilt on current codes
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What’s on the California CSLB C-31 Traffic Control exam

CSLB’s study guide divides the C-31 exam into five weighted sections. Traffic Control Installation carries the most weight at 51%, and together with Planning and Estimating (18%) it makes up 69% of the exam. Transportation and Training is the smallest share at 8%.

California CSLB C-31 Traffic Control exam sections and their share of the exam
SectionShare of exam
Planning and Estimating18%
Notifications and Coordination11%
Traffic Control Installation51%
Transportation and Training8%
Safety12%

The C-31 exam is closed book: no reference materials may be used during the test. Questions are multiple choice with four options, and there is no penalty for guessing, so leave nothing blank.

Source: CSLB Construction Zone Traffic Control (C-31) examination study guide. These weightings are the Board’s own, not our estimate. Contractor Pathway is independent and not affiliated with or endorsed by CSLB.

What this prep covers

  1. How this guide works
  2. Planning and Estimating — 18% of the exam
  3. Notifications and Coordination — 11% of the exam
  4. Traffic Control Installation — 51% of the exam
  5. Key Code Sections the Exam Tests
  6. Quick Reference Tables
  7. How C-31 — Traffic Control is actually scored
  8. California — who writes C-31 — Traffic Control
  9. Contractor method on C-31 — Traffic Control
  10. Clock discipline for C-31 — Traffic Control
  11. C-31 Traffic Control: Topic Checklist
  12. TTC components the paper separates
  13. Night, pedestrians, and the sitting
  14. C-31 traffic control — additional on-syllabus sections
  15. Advance warning and sign sequence
  16. Taper types and device spacing
  17. Flagging correctly
  18. Night work lighting
  19. Pedestrians, bikes, and business access
  20. TMA placement and roll-ahead
  21. Lane closure on a multi-lane highway
  22. Plans, permits, and the agency
  23. Crashworthy devices and categories
  24. Termination and the end of the work zone
  25. Mobile and short-duration operations
  26. Public and worker injuries
  27. C-31 extra identities
  28. C-31 field reference — CA MUTCD Part 6 devices, tapers, and night work
  29. C-31 additional CA MUTCD field rules
  30. C-31 last-mile on-syllabus topics
  31. Transportation and Training — 8% of the exam
  32. C-31 sitting recap — C31StudyGuide.pdf on/after February 1, 2024
  33. Safety — 12% of the exam
  34. Key Formulas Summary
  35. Common Exam Pitfalls
  36. Practice Scenario Questions
  37. Study Checklist
  38. Code reference and general knowledge

Related California CSLB exams

Common questions about this exam

Do I also need the Law and Business exam in California?

Yes. CSLB requires every applicant to pass the separate Law and Business exam in addition to the C-31 trade exam. That exam has 3 hours 30 minutes. California CSLB Law & Business prep is 75% off when you add it to this classification for the same term.

How much practice does this prep include?

It includes 5 full-length practice exams and 500 practice questions in total. Every question has a written explanation naming the code section the answer comes from.

How long is the study guide?

The California CSLB C-31 Traffic Control guide runs to roughly 19,784 words in 38 sections, starting with “How this guide works” and ending with “Code reference and general knowledge”.

How long do I get access?

Choose 30, 60 or 90 days at checkout. Your days do not start at checkout: they begin the first time you open the course (or 14 days after purchase, whichever comes first). Access works on any device, and you can retake every practice exam as often as you like. Days remaining are shown in your dashboard and you can extend at any time.

Is this an official California CSLB C-31 Traffic Control exam?

No. This is independent preparation material. It is not affiliated with or endorsed by any state licensing board or exam vendor, and it does not contain real exam questions. Always confirm current requirements with your licensing board.

About this prep

This prep is built specifically for the C-31 — Traffic Control examination and includes a 19,000+-word study guide written for this exam, 5 full-length practice exams and 500 practice questions, each with a written explanation.

How access works

You are paying for access length (30, 60, or 90 days). The study guide and four timed exams are the same on every term. Your days start the first time you open the course, not at checkout (or 14 days after purchase, whichever comes first), and access works on any device for that term.

Not affiliated with or endorsed by any state licensing board or exam vendor. For exam-preparation purposes only.