FDOT TTC/MOT Practice Exam With Correct answers
A+ Graded
1. A project requires a lane closure on a multi-lane undivided roadway with a posted speed
limit of 45 mph. According to FDOT Standard Plans, what is the minimum taper length
required for the merging taper, and which specific Index would you reference for this setup?
Correct Answer: The minimum taper length is calculated using the formula L = W x S. For a
12-foot lane at 45 mph, L = 12 x 45 = 540 feet. The reference is FDOT Standard Plans Index
102-613.
2. When utilizing a Truck Mounted Attenuator (TMA), what are the specific mass requirements
for the shadow vehicle to ensure the energy-absorbing properties of the TMA function as
crash-tested?
Correct Answer: The shadow vehicle must have a gross weight of approximately 15,000 to
22,000 pounds (or as specified by the manufacturer) to prevent the vehicle from being
pushed too far forward upon impact.
3. During a night-time operation, you are placing Type B High-Intensity Warning Lights.
According to FDOT 102-Series, where is the placement restricted for these lights in relation
to the taper?
Correct Answer: Type B lights should be mounted on the first two warning signs in the series
or on the barricades at the beginning of the taper; they are not to be used in a series to
delineate the travel path.
4. Describe the specific "clear zone" requirements for an intermediate-term stationary work
zone on a highway with a design speed of 55 mph.
Correct Answer: For a design speed of 55 mph, the clear zone width is typically 18 feet. Any
equipment or materials stored within this zone must be protected by a barrier or be crash-
worthy.
5. In a flagging operation on a two-lane, two-way road, what is the maximum distance allowed
between the two flagger stations according to FDOT Index 102-603?
Correct Answer: There is no fixed "maximum" footage, but flaggers must maintain effective
communication. A third flagger or pilot car is required if they cannot see each other or if
traffic gaps become unsafe.
6. What are the three specific requirements for a "Business Access" sign (FTP-22-06) when a
driveway is obscured by a lane closure?
Correct Answer: The sign must have a blue background with a white legend, include the
business name or "Business Access," and be placed at the specific point of entry to the
driveway.
7. When using Temporary Crash Cushions (inertial modules/sand barrels), how does the
temperature affect the maintenance and inspection of the units?
Correct Answer: In freezing temperatures, the sand must be mixed with calcium chloride or
salt to prevent the core from freezing into a solid block, which would prevent energy
dissipation during impact.
8. Explain the "Buffer Space" requirements in a work zone and clarify if equipment or personnel
are permitted to occupy this space.
, Correct Answer: The Buffer Space is a recovery zone for errant vehicles. Under no
circumstances are equipment, vehicles, or personnel allowed to occupy this space.
9. When designing a TTC plan for a high-speed (55 mph+) limited access facility, what is the
required spacing for work zone signs in the advance warning area?
Correct Answer: The spacing for signs in Series A, B, and C on a limited access highway must
be 1,500 feet apart.
10. In a situation where a sidewalk is closed, what are the specific requirements for a
"Pedestrian LCD" compared to standard construction fencing?
Correct Answer: A Pedestrian LCD must be crash-worthy, have a continuous 6-inch high
detectable edging for visual disabilities, and be interconnected to prevent passage between
units.
11. Explain the "Drop-off" hazard criteria. At what depth does FDOT require a temporary barrier
wall instead of just warning devices?
Correct Answer: Per FDOT Index 102-600, if the drop-off exceeds 5 feet and is within the
clear zone for more than 48 hours, a temporary barrier wall is mandatory.
12. When using an Arrow Board in a "Caution" mode for a shoulder closure, what is the only
legal display pattern allowed?
Correct Answer: The Arrow Board must display either four corners flashing or a solid
horizontal bar; flashing arrows are prohibited for shoulder work.
13. What is the maximum length of a work zone for a single-lane closure on a two-lane road
under flagger control before a pilot car becomes mandatory?
Correct Answer: FDOT generally requires a pilot car if the work zone exceeds 2 miles or if the
travel time through the zone exceeds 15 minutes.
14. Describe the retroreflective requirements for Type III Barricades used for a full road closure
in a night-time environment.
Correct Answer: The rails must have 8-inch alternating orange and white retroreflective
stripes (Type IV or higher) sloping downward at 45 degrees toward the passing side.
15. If a temporary traffic signal replaces flaggers, what is the mandatory requirement regarding
the "All-Red" interval?
Correct Answer: The All-Red interval must be calculated based on the distance between stop
bars to ensure the zone is cleared before opposing traffic gets a green light.
16. On a roadway with a posted speed of 65 mph, what is the required length of the longitudinal
buffer space?
Correct Answer: According to FDOT Index 102-600, for 65 mph, the longitudinal buffer space
must be a minimum of 645 feet.
17. What is the minimum length required for a "shifting taper" compared to a "merging taper"?
Correct Answer: A shifting taper is calculated as 0.5L (half the length of a merging taper).
18. If a work vehicle is parked on the shoulder of an Interstate, what is the minimum distance it
must be from the travel lane during non-work hours?
Correct Answer: The vehicle must be outside the clear zone, which is typically 30 feet from
the edge of the travel way.
A+ Graded
1. A project requires a lane closure on a multi-lane undivided roadway with a posted speed
limit of 45 mph. According to FDOT Standard Plans, what is the minimum taper length
required for the merging taper, and which specific Index would you reference for this setup?
Correct Answer: The minimum taper length is calculated using the formula L = W x S. For a
12-foot lane at 45 mph, L = 12 x 45 = 540 feet. The reference is FDOT Standard Plans Index
102-613.
2. When utilizing a Truck Mounted Attenuator (TMA), what are the specific mass requirements
for the shadow vehicle to ensure the energy-absorbing properties of the TMA function as
crash-tested?
Correct Answer: The shadow vehicle must have a gross weight of approximately 15,000 to
22,000 pounds (or as specified by the manufacturer) to prevent the vehicle from being
pushed too far forward upon impact.
3. During a night-time operation, you are placing Type B High-Intensity Warning Lights.
According to FDOT 102-Series, where is the placement restricted for these lights in relation
to the taper?
Correct Answer: Type B lights should be mounted on the first two warning signs in the series
or on the barricades at the beginning of the taper; they are not to be used in a series to
delineate the travel path.
4. Describe the specific "clear zone" requirements for an intermediate-term stationary work
zone on a highway with a design speed of 55 mph.
Correct Answer: For a design speed of 55 mph, the clear zone width is typically 18 feet. Any
equipment or materials stored within this zone must be protected by a barrier or be crash-
worthy.
5. In a flagging operation on a two-lane, two-way road, what is the maximum distance allowed
between the two flagger stations according to FDOT Index 102-603?
Correct Answer: There is no fixed "maximum" footage, but flaggers must maintain effective
communication. A third flagger or pilot car is required if they cannot see each other or if
traffic gaps become unsafe.
6. What are the three specific requirements for a "Business Access" sign (FTP-22-06) when a
driveway is obscured by a lane closure?
Correct Answer: The sign must have a blue background with a white legend, include the
business name or "Business Access," and be placed at the specific point of entry to the
driveway.
7. When using Temporary Crash Cushions (inertial modules/sand barrels), how does the
temperature affect the maintenance and inspection of the units?
Correct Answer: In freezing temperatures, the sand must be mixed with calcium chloride or
salt to prevent the core from freezing into a solid block, which would prevent energy
dissipation during impact.
8. Explain the "Buffer Space" requirements in a work zone and clarify if equipment or personnel
are permitted to occupy this space.
, Correct Answer: The Buffer Space is a recovery zone for errant vehicles. Under no
circumstances are equipment, vehicles, or personnel allowed to occupy this space.
9. When designing a TTC plan for a high-speed (55 mph+) limited access facility, what is the
required spacing for work zone signs in the advance warning area?
Correct Answer: The spacing for signs in Series A, B, and C on a limited access highway must
be 1,500 feet apart.
10. In a situation where a sidewalk is closed, what are the specific requirements for a
"Pedestrian LCD" compared to standard construction fencing?
Correct Answer: A Pedestrian LCD must be crash-worthy, have a continuous 6-inch high
detectable edging for visual disabilities, and be interconnected to prevent passage between
units.
11. Explain the "Drop-off" hazard criteria. At what depth does FDOT require a temporary barrier
wall instead of just warning devices?
Correct Answer: Per FDOT Index 102-600, if the drop-off exceeds 5 feet and is within the
clear zone for more than 48 hours, a temporary barrier wall is mandatory.
12. When using an Arrow Board in a "Caution" mode for a shoulder closure, what is the only
legal display pattern allowed?
Correct Answer: The Arrow Board must display either four corners flashing or a solid
horizontal bar; flashing arrows are prohibited for shoulder work.
13. What is the maximum length of a work zone for a single-lane closure on a two-lane road
under flagger control before a pilot car becomes mandatory?
Correct Answer: FDOT generally requires a pilot car if the work zone exceeds 2 miles or if the
travel time through the zone exceeds 15 minutes.
14. Describe the retroreflective requirements for Type III Barricades used for a full road closure
in a night-time environment.
Correct Answer: The rails must have 8-inch alternating orange and white retroreflective
stripes (Type IV or higher) sloping downward at 45 degrees toward the passing side.
15. If a temporary traffic signal replaces flaggers, what is the mandatory requirement regarding
the "All-Red" interval?
Correct Answer: The All-Red interval must be calculated based on the distance between stop
bars to ensure the zone is cleared before opposing traffic gets a green light.
16. On a roadway with a posted speed of 65 mph, what is the required length of the longitudinal
buffer space?
Correct Answer: According to FDOT Index 102-600, for 65 mph, the longitudinal buffer space
must be a minimum of 645 feet.
17. What is the minimum length required for a "shifting taper" compared to a "merging taper"?
Correct Answer: A shifting taper is calculated as 0.5L (half the length of a merging taper).
18. If a work vehicle is parked on the shoulder of an Interstate, what is the minimum distance it
must be from the travel lane during non-work hours?
Correct Answer: The vehicle must be outside the clear zone, which is typically 30 feet from
the edge of the travel way.
