CA Flagger Regulations and StandardsRegulations and Standards 3 — Questions and Answers
Question 1: The Caltrans Traffic Manual and the MUTCD work together so that California flaggers must:
- Follow only the Caltrans manual and ignore the MUTCD
- Follow MUTCD standards plus any additional California-specific requirements in the Caltrans manual (Correct answer)
- Choose whichever manual is easier to follow on a given day
- Apply MUTCD rules only on federal Interstate highways
Correct answer: Follow MUTCD standards plus any additional California-specific requirements in the Caltrans manual
California adopts the MUTCD and adds state-specific requirements through the Caltrans manual, so both must be followed.
Question 2: Under MUTCD standards, a flagger's stop/slow paddle must have a minimum blade diameter of:
- 14 inches
- 18 inches (Correct answer)
- 24 inches
- 30 inches
Correct answer: 18 inches
The MUTCD requires the STOP/SLOW paddle to have a minimum blade diameter of 18 inches.
Question 3: California regulations require that a Traffic Control Plan (TCP) must be:
- Created only for freeway work zones
- Prepared and approved before work begins on any lane closure affecting public traffic (Correct answer)
- Submitted to the DMV for approval
- Reviewed by flaggers but not required to be on-site during work
Correct answer: Prepared and approved before work begins on any lane closure affecting public traffic
A TCP must be prepared and approved prior to any lane closure or traffic disruption on public roadways.
Question 4: Which standard specifies that flaggers must stand at a location visible to approaching traffic for at least how many feet?
- 100 feet
- 200 feet
- 500 feet (Correct answer)
- 1,000 feet
Correct answer: 500 feet
The MUTCD specifies that flaggers must be visible to approaching drivers for a minimum of 500 feet.
Question 5: According to MUTCD regulations, when a flagger uses a flag instead of a STOP/SLOW paddle, the flag must be at least:
- 12 inches square
- 16 inches square
- 24 inches square (Correct answer)
- 36 inches square
Correct answer: 24 inches square
When flags are used (only as a last resort), the MUTCD requires a minimum size of 24 inches square.
Question 6: California requires that advance warning signs for a flagging operation be placed at a distance determined by:
- The flagger's personal judgment each day
- The posted speed limit of the road, using MUTCD distance tables (Correct answer)
- The number of workers in the work zone
- A minimum fixed distance of 100 feet regardless of speed
Correct answer: The posted speed limit of the road, using MUTCD distance tables
The MUTCD provides tables specifying sign placement distances based on posted road speed limits.
Question 7: Which of the following is a regulatory requirement for flagger stations on two-lane, two-way roads?
- One flagger may control traffic in both directions simultaneously from the center of the road
- Two flaggers are required — one at each end of the controlled section (Correct answer)
- Flaggers must alternate positions every 30 minutes per Cal/OSHA ergonomic rules
- A flagger station is only required when there are more than 10 workers present
Correct answer: Two flaggers are required — one at each end of the controlled section
Two-lane, two-way roads require a flagger at each end of the work zone to safely control traffic moving in opposite directions.
CA Flagger Regulations and StandardsRegulations and Standards 3
The Caltrans Traffic Manual and the MUTCD work together so that California flaggers must: