A construction zone traffic control contractor prepares or removes 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.
Authority cited: Sections 7008 and 7059; Reference: Sections 7058 and 7059 (Business and Professions Code)
Content of the Examination
The Construction Zone Traffic Control (C-31) Examination is divided into four major sections. These sections are:
1. Traffic Control Zone Establishment & Maintenance (52%)
Development of installation plan with contingencies
Installation of traffic control devices
Inspection and maintenance of traffic control zones
Removal of traffic control devices
Implementation of moving lane closures
2. Safety (26%)
Personal protective equipment
Evaluation of traffic control equipment quality
Implementation of safe environment and emergency procedures
3. Plans and Specifications (15%)
Designing traffic control plans
Plan reading and evaluation to determine scope of work
Plan and specification reading and evaluation to determine compliance with Caltrans and MUTCD
Estimating material, equipment, and labor
4. Permits & Notifications (7%)
Verification of city, state, USA/Dig Alert permits for traffic control project
Notification of public and appropriate agencies regarding traffic controls
*Percentages are approximate*
The following questions are typical of the types of items that are on the examination. The correct answer is highlighted.
1. Which sign should come first in the sequencing of signs in a temporary traffic control?
2. What is the MAXIMUM cone spacing allowed for a taper in a 50 MPH speed limit?
3. Which of the following items is required on ALL jobs for flaggers?
*All questions are written and reviewed by licensed contractors who are actively working in the field*
Cal/OSHA State of California Construction Safety Orders.
Manual on Uniform Traffic Control Devices for Streets and Highways: Part VI. Standards and Guides for Traffic Controls for Street and Highway Construction, Maintenance, Utility, and Incident Management Operations California Supplement.
American Traffic Safety Service Association (ATSSA),