Free C31 Construction Zone Traffic Control Exam

Welcome to your free C-31 Construction Zone Traffic Control Quiz

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1. 
205 traffic cones are required for a lane closure. The cost of renting one cone is $0.52 per day. What would be the rental cost for 8 days?

2. 
What is the maximum cone spacing allowed for a taper in a 50 miles per hour speed limit?

3. 
A portable changeable message sign must display at least how many characters per line?

4. 
A pilot vehicle is being used on a traffic control project. Cyclists need to get through the closure. What is the BEST option for the C-31 contractor?

5. 
The California Manual on Uniform Traffic Control Devices handles traffic safety for which of the following?

6. 
What is the minimum length of a merging taper in a 25 mph zone?

7. 
What are the first things you should see when approaching a construction site?

8. 
How many Type 2 barricades does it take to close the shoulder and one lane of a freeway?

9. 
Which of the following is a delineator?

10. 
Which of the following signs would be on the front of a crash cushion?