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ATSSA Traffic Control Supervisor Re-certification exam with verified detailed solutions

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ATSSA Traffic Control Supervisor Re-certification exam with verified detailed solutions

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ATSSA Traffic Control Supervisor Re-
certification exam with verified detailed
solutions

L=(WS²)/60 for 40MPH or less, ||! ||! ||! ||!




L=WS for 45MPH or more - correct answer ✔Formula for Min. taper
||! ||! ||! ||! ||! ||! ||! ||! ||! ||! ||! ||!


length


The off peak 85th percentile. Which is the speed at or below which
||! ||! ||! ||! ||! ||! ||! ||! ||! ||! ||! ||! ||!


85% of vehicles travel operating speed in free flow conditions - correct
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answer ✔speed used in formulas should be
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125' - correct answer ✔Distance of L for 25 MPH with 12' Lane width
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245' - correct answer ✔Distance of L for 35 MPH with 12' Lane width
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540' - correct answer ✔Distance of L for 45 MPH with 12' Lane width
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660' - correct answer ✔Distance of L for 55 MPH with 12' Lane width
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780' - correct answer ✔Distance of L for 65 MPH 12' Lane width
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L Minimum - correct answer ✔Merging Taper Length
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, 1/2 L Minimum - correct answer ✔Shifting Taper Length
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1/3 L Minimum - correct answer ✔Shoulder Taper Length
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50'-100' regardless of speed ||! ||! ||!




6 devices 10'-20' apart - correct answer ✔One-Lane, Two-Way Taper
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(Flagger taper) Length and number of devices
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50'-100' per lane - correct answer ✔Downstream taper Length
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2L - correct answer ✔Tangent distance (between tapers)
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1/2L - correct answer ✔Tangent distance before shifting taper
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Buffer Space ||!




Work Space ||!




Traffic Space - correct answer ✔Activity Area Sub-components (3)
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Recovery Area for errant vehicles: Forgiving design
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Protects workers and Motorists ||! ||! ||!




Always completely empty or clear
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No vehicles, truck-mounted attenuator, equipment, or materials
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STRONGLY RECOMMENDED: unless there is a documented reason not to
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- correct answer ✔Longitudinal Buffer Space
||! ||! ||! ||! ||! ||!

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