TRAFFIC SUPERVISOR UPDATED EXAM
SCRIPT FULL SOLUTION VERIFIED
QUESTIONS AND ANSWERS
●● The off peak 85th percentile. Which is the speed at or below which
85% of vehicles travel operating speed in free flow conditions
Answer: speed used in formulas should be
●● 125'
Answer: Distance of L for 25 MPH with 12' Lane width
●● 245'
Answer: Distance of L for 35 MPH with 12' Lane width
●● 540'
Answer: Distance of L for 45 MPH with 12' Lane width
●● 660'
Answer: Distance of L for 55 MPH with 12' Lane width
●● 780'
Answer: Distance of L for 65 MPH 12' Lane width
, ●● L Minimum
Answer: Merging Taper Length
●● 1/2 L Minimum
Answer: Shifting Taper Length
●● 1/3 L Minimum
Answer: Shoulder Taper Length
●● 50'-100' regardless of speed
6 devices 10'-20' apart
Answer: One-Lane, Two-Way Taper (Flagger taper) Length and number
of devices
●● 50'-100' per lane
Answer: Downstream taper Length
●● 2L
Answer: Tangent distance (between tapers)
●● 1/2L
SCRIPT FULL SOLUTION VERIFIED
QUESTIONS AND ANSWERS
●● The off peak 85th percentile. Which is the speed at or below which
85% of vehicles travel operating speed in free flow conditions
Answer: speed used in formulas should be
●● 125'
Answer: Distance of L for 25 MPH with 12' Lane width
●● 245'
Answer: Distance of L for 35 MPH with 12' Lane width
●● 540'
Answer: Distance of L for 45 MPH with 12' Lane width
●● 660'
Answer: Distance of L for 55 MPH with 12' Lane width
●● 780'
Answer: Distance of L for 65 MPH 12' Lane width
, ●● L Minimum
Answer: Merging Taper Length
●● 1/2 L Minimum
Answer: Shifting Taper Length
●● 1/3 L Minimum
Answer: Shoulder Taper Length
●● 50'-100' regardless of speed
6 devices 10'-20' apart
Answer: One-Lane, Two-Way Taper (Flagger taper) Length and number
of devices
●● 50'-100' per lane
Answer: Downstream taper Length
●● 2L
Answer: Tangent distance (between tapers)
●● 1/2L
