Roadway Traffic Control Inspection Flashcards
7 cards from real CTQP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Roadway Traffic Control Inspection flashcards as text
What spacing interval should be used for channelizing devices in a taper on a highway with a posted speed of 65 mph?
Answer: Devices placed at intervals equal to the speed limit in feet (e.g., 65 feet)
MUTCD guidance recommends channelizing device spacing in tapers equal to the speed limit in feet, so 65 mph = 65-foot spacing.
A flagger must stop a vehicle for an approaching load. In which hand and in what position should the flagger hold the STOP paddle?
Answer: Either hand, with the STOP face toward approaching traffic and the arm extended horizontally
The flagger holds the STOP paddle with the STOP face toward approaching traffic and extends the arm horizontally to signal vehicles to stop.
When inspecting arrow panels (sequential flashing arrow signs), which mode should be activated for a lane closure on a multi-lane highway?
Answer: Sequential arrow mode pointing toward the open lane(s)
Sequential arrow mode directs traffic to move toward open lanes, providing clear directional guidance in lane-closure situations on multi-lane highways.
An inspector finds that a PCM (portable changeable message sign) displays a message with seven lines of text scrolling rapidly. What is the primary concern?
Answer: Drivers cannot read more than two to three lines at highway speeds without becoming distracted
MUTCD limits PCMS messages to two phases of two lines each so drivers can read them safely at highway speeds without distraction.
Which of the following is a mandatory inspection checkpoint before any flagging operation begins each day?
Answer: Confirm flaggers have current certification, appropriate PPE, and that communications between flaggers are established and tested
Before flagging begins, the inspector must confirm flagger certifications are current, Class 3 PPE is worn, and communication between opposing flaggers is functional.
A short-duration work zone expected to last less than 60 minutes on a low-volume rural road may qualify for which simplified TTC setup?
Answer: A short-duration setup using only cones without advance warning signs, provided worker safety and sight distance are adequate
Short-duration operations on low-volume roads may use simplified cone-only setups when sight distance and worker safety conditions are verified as adequate.
When verifying that retroreflective sheeting on temporary signs meets MUTCD requirements, what minimum sheeting type is required for most temporary traffic control signs?
Answer: High Intensity Prismatic (Type III) or better sheeting
MUTCD requires at minimum High Intensity Prismatic (Type III) retroreflective sheeting for temporary traffic control signs to ensure adequate visibility at night.