CA FLAGGER Cheat Sheet 2026

The 30 highest-yield CA FLAGGER facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. If a work zone is set up on a curve and sight distance is limited, what additional precaution is required? → Post a flagger on both sides of the curve and use longer gaps
2. Under California law, what is the minimum age requirement to work as a certified flagger? → 18 years old
3. In dense fog conditions, the flagger should advise the supervisor to: → Reduce speed limits and add supplemental warning signs
4. Under California law, an employer must provide a flagger with all required PPE at: → No cost to the employee
5. In a California flagger certification context, why must radio channels be pre-assigned before starting a shift? → To ensure all team members communicate on the same frequency without confusion
6. According to Cal/OSHA regulations, the minimum age to work as a flagger on a California roadway construction project is: → 18 years old
7. Which study approach is most effective for Setup and Closure material? → Active recall with practice questions
8. What should a flagger do if their STOP/SLOW paddle is damaged or broken during a shift? → Use a backup flag and notify the supervisor immediately
9. What is the primary purpose of retroreflective material on a flagger's vest? → To make the flagger visible to drivers at night or in low-light conditions
10. When a Caltrans project and a local agency project have conflicting traffic control requirements, which standard generally takes precedence? → The more restrictive requirement between MUTCD and Caltrans standards must be followed
11. The primary difference between daytime and nighttime high-visibility vest requirements for California flaggers is: → Class — Class 2 for day, Class 3 for night
12. What does a flagger do LAST before releasing a queue of stopped vehicles? → Confirm with the other end that the lane is clear
13. What is the purpose of an emergency action plan? → To establish procedures for responding to various emergencies
14. When is it appropriate to begin the closure setup process on a high-speed highway? → During off-peak or low-traffic hours when possible, with proper approvals
15. On a high-speed roadway (55+ mph), which class of high-visibility vest does California require for flaggers? → Class 3
16. Which of the following is NOT an approved method for a California flagger to communicate with approaching drivers? → Verbal shouting as the primary signal
17. What is the minimum age requirement to work as a flagger on California public roads? → 18 years old
18. During nighttime flagging, glare from oncoming headlights can best be managed by: → Positioning yourself to minimize direct headlight glare while remaining visible
19. What is the chain of command? → The hierarchical structure of authority in a military organization
20. Which study approach is most effective for Legal Requirements material? → Active recall with practice questions
21. What is the purpose of a risk assessment? → To identify potential hazards and determine mitigation measures
22. What information should a flagger relay via radio when releasing a group of vehicles through a one-lane zone? → The number of vehicles released and direction of travel
23. A temporary lane closure is being set up on a road with a 55 mph posted speed. Which advance warning sign should be placed farthest from the work area? → ROAD WORK AHEAD
24. What is the first action a flagger should take when an aggressive driver approaches the work zone at high speed? → Move to a safe escape route immediately while keeping the paddle visible
25. On a multilane highway, a flagger is helping set up a right-lane closure. Where should the first cone of the taper be placed? → At the point where the closed lane begins to narrow, farthest upstream in the taper
26. A flagger working near high noise levels (heavy machinery) should rely primarily on which communication method with workers? → Visual hand signals and prearranged whistle codes
27. At what point in a flagging cycle is the risk of a rear-end collision HIGHEST for waiting vehicles? → When a large queue has built up and traffic is stopped
28. What are the principles of mission command? → Competence, mutual trust, shared understanding, commander's intent
29. When setting up a temporary traffic control zone on a two-lane road, what is the correct order of device placement when working in the direction of traffic? → Place devices starting farthest from the work area and moving toward it
30. What should a flagger do when faced with approaching emergency vehicles (police, fire, ambulance)? → Stop all traffic immediately to allow emergency vehicles to pass