ATSSA TRAFFIC CONTROL SUPERVISOR RE-CERTIFICATION (MISSING SOME BASICS) EXAM QUESTIONS AND CORRECT DETAILED ANSWERS A+ GRADED
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Course
ATTSA TRAFFIC SUPERVISOR
Institution
ATTSA TRAFFIC SUPERVISOR
L=(WS²)/60 for 40 MPH or less,
L=WS for 45 MPH or more - ANS 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 - ANS speed used in formulas should be
125' - ANS Distance of...
RE-CERTIFICATION (MISSING SOME
BASICS) EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS A+
GRADED
, L=(WS²)/60 for 40 MPH or less,
L=WS for 45 MPH or more - ANS 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 - ANS speed used in formulas should be
125' - ANS Distance of L for 25 MPH with 12' Lane width
K
245' - ANS Distance of L for 35 MPH with 12' Lane width
C
540' - ANS Distance of L for 45 MPH with 12' Lane width
660' - ANS Distance of L for 55 MPH with 12' Lane width
LO
780' - ANS Distance of L for 65 MPH 12' Lane width
L Minimum - ANS Merging Taper Length
YC
1/2 L Minimum - ANS Shifting Taper Length
1/3 L Minimum - ANS Shoulder Taper Length
50'-100' regardless of speed
6 devices 10'-20' apart - ANS One-Lane, Two-Way Taper (Flagger taper) Length and number
D
of devices
50'-100' per lane - ANS Downstream taper Length
U
2L - ANS Tangent distance (between tapers)
ST
1/2L - ANS Tangent distance before shifting taper
Buffer Space
Work Space
Traffic Space - ANS Activity Area Sub-components (3)
Recovery Area for errant vehicles: Forgiving design
Protects workers and Motorists
Always completely empty or clear
No vehicles, truck-mounted attenuator, equipment, or materials
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