Glossary
Flagger Terms & Vocabulary
15 essential flagger terms with plain-English definitions: the vocabulary you’ll hear in training and on day one.
Key flagger vocabulary
These 15 terms come up constantly in flagger training, on the job and in interviews. Knowing them helps you follow instructions, document accurately and sound prepared.
- Activity area
- Where the work happens.
- Advance warning area
- The section before a work zone where drivers are warned, such as with a “Flagger Ahead” sign.
- AFAD
- Automated flagger assistance device, operated remotely by a flagger.
- Buffer space
- An empty area between traffic and workers.
- Channelizing devices
- Cones, drums and barricades that guide traffic.
- Escape route
- A planned path a flagger can use to get away from an errant vehicle.
- Flagger station
- The position where a flagger stands, visible to approaching traffic.
- High-visibility apparel
- Fluorescent vests and clothing meeting ANSI/ISEA 107.
- MUTCD
- Manual on Uniform Traffic Control Devices: the national standard for traffic signs and work zones.
- Pilot car
- A vehicle that leads traffic through a long work zone.
- STOP/SLOW paddle
- The octagonal sign flaggers use to control traffic.
- Taper
- A line of cones or devices that shifts traffic.
- Termination area
- Where traffic returns to its normal path.
- Traffic control plan (TCP)
- The plan showing signs and devices for a work zone.
- Transition area
- Where traffic is moved out of its normal path with tapers.
Practice these terms
Test yourself with the free Flagger practice test: it includes vocabulary questions built from this list. For a complete course, see Flagger training.
Browse terms from every career in our career glossary.