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 autho...
Flagger study guide questions and answers 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. - Intermediate -Term Stationary
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