SOLUTIONS VERIFIED 2024/2025
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
Sun block SPF 20 will offer this amount of time of sun block.
400 minutes (20 X SPF #)
The distance between the flagging station and the work space should never be
less than ____ away.
50 ft
Warning signs and channelizing devices may be omited where the work space is
behind a barrier, more than 2ft behind the curb, or 15ft from the edge of any
roadway
2ft - 15ft rule
Duration of work for flagging, this is the type that occupies a location more than 3
days.
Long-Term Stationary
Duration of work for flagging, this is the type that occupies a location more than
one daylight period up to 3 days, or nighttime work lasting more than 1 hour.