Answers | 2026 Complete Prep | A+
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How long flagger certification is valid -✓✓3 years
TTC -✓✓Temporary Traffic Control
The quality or state of being conspicuous -✓✓Conspicuity
All signals, marking, and other devices used to regulate, warn, or guide traffic,
placed on, over, or adjacent to a street, highway, or bikeway by authority of a
public agency having jurisdiction. -✓✓Traffic Control Devices
All 4 work zones must conform to these (4) standards -✓✓-MUTCD -Local -State
-Comcast
(4) Typical Comcast traffic control devices -✓✓-Cones -Signs -Vehicle strobe -
High visibility garments
(5) Principles of traffic control devices -✓✓-Fulfill a need -Command attention -
Convey a clear, simple meaning -Command repect from road users -Give adequate
time for proper response
Score needed to pass the flagger written exam -✓✓80 percent
, This is where a Flagger should be standing at all times. -✓✓Shoulder by the
fog/edge line.
These two kinds of crashes occur frequently near the taper and channeling devices
-✓✓Fixed Object & Sideswipe
Stop/Slow retroreflective paddles must be ----- wide, and letters ------ high. -
✓✓18" wide, 6" letters
Flaggers shall never flag from these (3) main areas. -✓✓-On/Under a Bridge -
On/Under an overpass -In a vehicle
Retroreflective vests must be visible to this minimum distance. -✓✓1000 ft
For nighttime flagging, this type of safety vest should be worn. -✓✓Class 3
35.74 + .6215T - 35.75 (V0.16) + .4275T (V0.16) -✓✓Wind chill formula
The minimum mounting height from the roadway to the bottom of an electric
arrow panel. -✓✓7'
For portable changeable message signs, the message being stated should be visible
for at least this minimum distance. -✓✓650'
SPF -✓✓Sun Protection Factor