CSLB Earthwork and Paving (C-12): Online Practice Exam

What this exam covers

Practice questions for the California CSLB Earthwork & Paving (C-12) license exam, delivered online and graded instantly. Per the state's classification, a C-12 contractor grades, clears, and prepares land surfaces; excavates, fills, and compacts earthwork, including grading for roads, streets, and other paved areas. Works on any device, including iPad. See the official CSLB C12 classification.

Updated July 2026 · 2022 CA Codes · 419 Questions · Topic Practice

• Content Last Updated: July 24, 2026
• Code Basis: 2022 California Codes
• Question Count: 419 practice questions
• Organized By: CSLB study-guide topic categories
• Includes: This practice exam has been updated using Peerless’s vetted usable question set. Questions are organized by CSLB study-guide topic categories and include answer explanations to support full-exam review and focused topic practice. Each topic has a mini-exam to help you develop mastery.

Sample questions — Try our free practice test

1. Which of the following would be required when using blasting powder?
   A. ability to read english · B. safety glasses · ✓ C. a permit to use it · D. all of the above
2. When bell and spigot cast iron pipe is to be laid in a trench which has been mechanically excavated, the "bell-holes" are usually dug by:
   A. a bulldozer · ✓ B. hand · C. a dragline · D. a trencher
3. What is the next step after ripping, when ripping and re-compacting existing road?
   A. spread the ripped asphalt · B. roll the ripped asphalt · C. crush the ripped asphalt · ✓ D. scrape the ripped asphalt into windows
4. What are the operating hours for type A warning lights?
   A. 12 hrs. per day · B. 24 hrs. per day · ✓ C. dusk to dawn · D. none of the above
5. In trenches 4' deep or more safer access within ___ feet of any work area must be provided.
   ✓ A. 25 · B. 50 · C. 75 · D. 100