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Exam (elaborations)

ATSSA TRAFFIC CONTROL SUPERVISOR RE-CERTIFICATION (MISSING SOME BASICS) QUESTIONS AND CORRECT VERIFIED ANSWERS

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ATSSA TRAFFIC CONTROL SUPERVISOR RE-CERTIFICATION (MISSING SOME BASICS) QUESTIONS AND CORRECT VERIFIED ANSWERS

Institution
ATSSA
Course
ATSSA

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ATSSA TRAFFIC CONTROL SUPERVISOR
RE-CERTIFICATION (MISSING SOME
BASICS) QUESTIONS AND CORRECT
VERIFIED ANSWERS
L=(WS²)/60A2forA240MPHA2orA2less,
L=WSA2forA245MPHA2orA2moreA2-A2Ans--FormulaA2forA2Min.A2taperA2length

TheA2offA2peakA285thA2percentile.A2WhichA2isA2theA2speedA2atA2orA2belowA2whichA285%A2of
A2vehiclesA2travelA2operatingA2speedA2inA2freeA2flowA2conditionsA2-A2Ans--
speedA2usedA2inA2formulasA2shouldA2be

125'A2-A2Ans--DistanceA2ofA2LA2forA225A2MPHA2withA212'A2LaneA2width

245'A2-A2Ans--DistanceA2ofA2LA2forA235A2MPHA2withA212'A2LaneA2width

540'A2-A2Ans--DistanceA2ofA2LA2forA245A2MPHA2withA212'A2LaneA2width

660'A2-A2Ans--DistanceA2ofA2LA2forA255A2MPHA2withA212'A2LaneA2width

780'A2-A2Ans--DistanceA2ofA2LA2forA265A2MPHA212'A2LaneA2width

LA2MinimumA2-A2Ans--MergingA2TaperA2Length

1/2A2LA2MinimumA2-A2Ans--ShiftingA2TaperA2Length

1/3A2LA2MinimumA2-A2Ans--ShoulderA2TaperA2Length

50'-100'A2regardlessA2ofA2speed
6A2devicesA210'-20'A2apartA2-A2Ans--One-Lane,A2Two-
WayA2TaperA2(FlaggerA2taper)A2LengthA2andA2numberA2ofA2devices

50'-100'A2perA2laneA2-A2Ans--DownstreamA2taperA2Length

2LA2-A2Ans--TangentA2distanceA2(betweenA2tapers)

1/2LA2-A2Ans--TangentA2distanceA2beforeA2shiftingA2taper

BufferA2Space
WorkA2Space
TrafficA2SpaceA2-A2Ans--ActivityA2AreaA2Sub-componentsA2(3)

RecoveryA2AreaA2forA2errantA2vehicles:A2ForgivingA2design

, ProtectsA2workersA2andA2Motorists
AlwaysA2completelyA2emptyA2orA2clear
NoA2vehicles,A2truck-mountedA2attenuator,A2equipment,A2orA2materials
STRONGLYA2RECOMMENDED:A2unlessA2thereA2isA2aA2documentedA2reasonA2notA2toA2-
A2Ans--LongitudinalA2BufferA2Space


WhereA2roadA2usersA2areA2returnedA2toA2theirA2normalA2path
extendsA2fromA2theA2downstreamA2endA2ofA2theA2workA2areaA2toA2theA2lastA2deviceA2suchA
2asA2endA2workA2zoneA2sign
MayA2contain:
endA2workA2zoneA2sign:A2usuallyA2500'A2pastA2lastA2device
downstreamA2taperA2=A250'-100'A2perA2laneA2-A2Ans--TerminationA2AreaA2is:

canA2contain:A2(2)

100'A2-A2Ans--
RecommendedA2AdvancedA2WarningA2SignA2Spaceing:A2UrbanA2(lowA2speed)

350'A2-A2Ans--
RecommendedA2AdvancedA2WarningA2SignA2Spaceing:A2urbanA2(highA2speed)

500'A2-A2Ans--RecommendedA2AdvancedA2WarningA2SignA2Spaceing:A2Rural

1000',A21500',A2andA22640'A2-A2Ans--
RecommendedA2AdvancedA2WarningA2SignA2Spaceing:A2freewaysA2andA2expresswaysA2(
3)

1A2Mile
50%
shoulderA2atA2beginningA2ofA2taperA2ifA2possible,A2ifA2not,A2asA2closeA2toA2beginningA2asA2p
ossibleA2insideA2taper.A2-A2Ans--ArrowA2boardA2visibilityA2distanceA2byA2design:
nightA2timeA2dimming:
location:

taper:A2notA2toA2exceedA2distanceA2inA2feetA2=A2toA2postedA2speedA2limit
tangent:A2distanceA2=A2doubleA2postedA2speedA2limitA2-A2Ans--deviceA2spacingA2taper:
tangent:

A:A2LowA2intensityA2flashing
B:A2High-intensityA2flashing
C:A2SteadyA2Burn
D:A2360°A2steadyA2burnA2-A2Ans--WarningA2lightsA2types:
TypeA2A:
TypeA2B:
TypeA2C:
TypeA2D:
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Uploaded on
July 13, 2026
Number of pages
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Written in
2025/2026
Type
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  • atssa traffic control supervisor re certification
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