Roadway Design and Geometric Standards Flashcards
6 cards from real FDOT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Roadway Design and Geometric Standards flashcards as text
What is the minimum median width required for a raised median on a divided arterial to accommodate a left-turn storage lane per FDOT standards?
Answer: 12 feet
FDOT requires a minimum 12-foot raised median width to accommodate a left-turn storage lane within the median, allowing vehicles to complete left turns safely.
According to FDOT horizontal alignment standards, what is the minimum radius of curvature for a 60 mph design speed road with maximum superelevation of 8%?
Answer: 855 feet
FDOT and AASHTO tables indicate a minimum horizontal curve radius of approximately 855 feet at 60 mph design speed with 8% maximum superelevation.
What is the purpose of a 'deceleration lane' in FDOT intersection design?
Answer: Provide a separate lane for turning vehicles to slow down without impeding through traffic
A deceleration lane provides turning vehicles a separate space to reduce speed without disrupting the flow of through traffic in the travel lanes.
What FDOT document would a designer reference for standard pedestrian ramp (curb ramp) details?
Answer: FDOT Design Standards Index 304
FDOT Design Standards Index 304 provides standard curb ramp designs, dimensions, and detectable warning surface requirements for pedestrian accessibility.
In FDOT pavement design, what does 'ESAL' stand for?
Answer: Equivalent Single Axle Load
ESAL stands for Equivalent Single Axle Load, the standard unit for measuring pavement damage caused by different vehicle axle loads relative to an 18-kip single axle.
What is the standard posted speed limit increment used on Florida State Highway System roads?
Answer: 5 mph increments
Speed limits on Florida's State Highway System are posted in 5 mph increments (e.g., 25, 30, 35, 40 mph) following standard traffic engineering practice.