Traffic Control and Maintenance of Traffic Flashcards

What is the minimum retro-reflectivity level required for temporary orange construction zone signs on FDOT projects?

Answer: Type III sheeting

FDOT requires a minimum of Type III retro-reflective sheeting for temporary orange work zone signs to ensure adequate nighttime visibility.

According to FDOT MOT requirements, what must happen to traffic control devices during nighttime hours when active work is not occurring?

Answer: Unnecessary devices must be removed or covered

FDOT requires removal or covering of traffic control devices that are not applicable to nighttime conditions to avoid confusing drivers unnecessarily.

What is the required minimum height above the road surface for temporary overhead signs installed over travel lanes in FDOT work zones?

Answer: 14 feet 6 inches

FDOT requires a minimum overhead clearance of 14 feet 6 inches for temporary signs installed over travel lanes to accommodate legal vehicle heights.

What is a 'channelizing device' as defined in Florida's MUTCD for work zones?

Answer: A portable traffic control device that guides drivers through a work zone

Channelizing devices are portable traffic control devices such as cones, drums, and tubular markers that guide drivers safely through or around work zones.

On FDOT projects, when is a flagger required in addition to traffic control devices for a lane closure?

Answer: When sight distance is restricted or device visibility is impaired

Flaggers supplement traffic control devices when sight distance is restricted, visibility is impaired, or devices alone are insufficient to safely control traffic.

What does the FDOT designation 'TTC' stand for in the context of work zone safety?

Answer: Temporary Traffic Control

TTC stands for Temporary Traffic Control, encompassing all devices, signs, and procedures used to safely guide traffic through construction work zones.