The California Construction Zone Traffic Control (C-31) contractor license allows you to prepare or remove lane closures, flagging, or traffic diversions, utilizing portable devices, such as cones, delineators, barricades, sign stands, flashing beacons, flashing arrow trailers, and changeable message signs, on roadways, including, but not limited to, public streets, highways, or any public conveyance.
The CSLB will either issue your license or contact you if they need further information.
Login credentials emailed upon enrollment
Unlimited access (no time limits)
Lecture videos
Practice questions
Key concepts
Step-by-step solutions to math problems
Live review
classesLogin credentials emailed upon enrollment
Unlimited access (no time limits)
Lecture videos
Practice questions
Key concepts
Step-by-step solutions to math problems
Live review
classesBelow are the specifications (test type, academic content, etc.) for each exam needed to get the Construction Zone Traffic Control (C-31) contractor's license in California.
The book set includes all source references for the California Construction Zone Traffic Control (C-31) Contractor exams. You can use these books to study for the exams but you are not allowed to bring these books in with you to the testing center. These tests will be closed-book. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.
Standard Plans
Standard Specifications
California Manual on Uniform Traffic Control
Flagging Instruction Handbook
State of California General Industry & Electr
State of California Construction & Electrical
California Contractors License Law and Refere
California Employer’s Guide (DE 44)
California Labor Code
NASCLA Contractors Guide to Business Law and
Greenbook: Standard Specifications for Public
IRS Circular E
State of California General Industry & Electr
State of California Construction & Electrical