MOT Traffic Control Devices & Placement Standards 5 — Questions and Answers
Question 1: Which of the following is NOT one of the five components of a temporary traffic control zone?
- Advance warning area
- Transition area
- Inspection area (Correct answer)
- Termination area
Correct answer: Inspection area
The five components of a TTC zone are the advance warning area, transition area, buffer space, work space, and termination area — there is no 'inspection area.'
Question 2: In a temporary work zone, rumble strips may be used to:
- Replace the need for advance warning signs
- Alert inattentive drivers that they are approaching or in a work zone (Correct answer)
- Replace flaggers on multilane highways
- Define the lateral edge of a lane closure taper
Correct answer: Alert inattentive drivers that they are approaching or in a work zone
Temporary rumble strips provide tactile and audible alerts to inattentive or drowsy drivers entering or approaching a work zone.
Question 3: What is the required color of the retroreflective material on a standard traffic cone used in work zones?
- Orange with no reflective bands
- Orange with one or two white retroreflective bands (Correct answer)
- All white retroreflective
- Alternating orange and yellow bands
Correct answer: Orange with one or two white retroreflective bands
Standard work zone cones must be predominantly orange with one or two white retroreflective bands for nighttime visibility per MUTCD standards.
Question 4: A 'short-duration' work zone is defined by the MUTCD as one that occupies a location for:
- Less than 15 minutes
- More than one hour but less than one day (Correct answer)
- More than one day but less than one week
- Exactly one shift of 8 hours
Correct answer: More than one hour but less than one day
Short-duration work zones occupy a location for more than one hour but less than 24 hours (one day) according to MUTCD definitions.
Question 5: When a work zone sign conflicts with an existing permanent sign, the correct action is to:
- Leave both signs in place and let drivers decide
- Cover or remove the conflicting permanent sign for the duration of the work (Correct answer)
- Place the work zone sign behind the permanent sign
- Remove the work zone sign and rely on the permanent sign
Correct answer: Cover or remove the conflicting permanent sign for the duration of the work
Conflicting permanent signs must be covered or removed to prevent confusion and ensure drivers receive only the correct information during the work zone period.
Question 6: The MUTCD requires that all flaggers wear high-visibility safety apparel meeting what minimum ANSI/ISEA standard for work zones?
- Class 1
- Class 2
- Class 3 (Correct answer)
- Class 4
Correct answer: Class 3
Flaggers must wear ANSI/ISEA 107 Class 3 high-visibility safety apparel, the highest visibility class, because they are exposed to vehicular traffic.
Question 7: When removing temporary traffic control devices after a work zone operation, devices should be removed:
- All at once as quickly as possible
- Starting from the advance warning area and working toward the work space
- Starting from the downstream end and working back toward the advance warning area (Correct answer)
- In any order, as long as workers wear high-visibility vests
Correct answer: Starting from the downstream end and working back toward the advance warning area
TTC devices are removed starting from the downstream (termination) end working back toward the advance warning area so that workers are always protected by remaining devices.
MOT Traffic Control Devices & Placement Standards 5
Which of the following is NOT one of the five components of a temporary traffic control zone?