CTQP Roadway Traffic Control Inspection 2 ā Questions and Answers
Question 1: What is the purpose of a 'Portable Changeable Message Sign (PCMS)' in a construction work zone?
- To replace permanent roadway signs during construction
- To provide dynamic messages about work zone conditions, delays, or alternate routes (Correct answer)
- To mark the beginning of the construction zone
- To display the contractor's contact information
Correct answer: To provide dynamic messages about work zone conditions, delays, or alternate routes
A PCMS displays variable text messages that can be updated to inform drivers of current work zone conditions, delays, lane closures, or alternate routing.
Question 2: What is a 'flagger' required to use when controlling traffic in a FDOT work zone?
- Only a stop/slow paddle
- A STOP/SLOW paddle, a high-visibility safety vest, and if needed at night, a flashlight or wand light (Correct answer)
- A radio and a stop sign
- A red flag only, per traditional standards
Correct answer: A STOP/SLOW paddle, a high-visibility safety vest, and if needed at night, a flashlight or wand light
FDOT flaggers must use a STOP/SLOW paddle, wear a high-visibility safety vest, and use lights (flashlight or wand) when flagging in low-light or nighttime conditions.
Question 3: What minimum taper length is generally required for a lane closure on a 55 mph roadway?
- 100 feet
- 250 feet
- 495 feet (Correct answer)
- 1,000 feet
Correct answer: 495 feet
Taper length for lane closures is calculated as L = W Ć SĀ²/60 for speeds ā¤45 mph or W Ć S for higher speeds; on a 55 mph roadway, a typical 12-foot lane requires approximately 660 feet, with FDOT minimums around 495 feet.
Question 4: What is a 'buffer space' in a traffic control work zone?
- The lane width reduced for traffic in the work zone
- An unoccupied distance between the traffic control devices and the actual work activity, providing recovery space for errant vehicles (Correct answer)
- The space between workers and the road edge
- The gap between temporary signs and permanent signs
Correct answer: An unoccupied distance between the traffic control devices and the actual work activity, providing recovery space for errant vehicles
The buffer space is an unoccupied area between the last traffic control device and the beginning of the work activity, providing a safety zone that errant vehicles can enter without striking workers.
Question 5: When must a Maintenance of Traffic (MOT) plan be submitted and approved by FDOT?
- After the first lane closure is implemented
- Before any traffic control devices are placed or any lane closures are made (Correct answer)
- During the first project progress meeting
- Only when lane closures exceed 72 hours
Correct answer: Before any traffic control devices are placed or any lane closures are made
The MOT plan must be reviewed and approved by FDOT before any traffic control devices are placed or lane closures are implemented to ensure proper sequencing and design.
Question 6: What does a 'road user cost' provision in a construction contract address?
- The cost of installing and maintaining traffic control devices
- Financial incentives or disincentives tied to how long a lane or road is closed, compensating road users for delay (Correct answer)
- The payment to FDOT for right-of-way use during construction
- The cost of traffic studies required by the permit
Correct answer: Financial incentives or disincentives tied to how long a lane or road is closed, compensating road users for delay
Road user cost provisions establish a daily dollar value for each day a lane or road is closed beyond a specified threshold, incentivizing the contractor to minimize traffic disruption.
CTQP Roadway Traffic Control Inspection 2
What is the purpose of a 'Portable Changeable Message Sign (PCMS)' in a construction work zone?