FDOT Roadway Design and Geometric Standards 2

Question 1

What is the minimum required stopping sight distance (SSD) at a design speed of 55 mph per FDOT standards?

Accepted Answer

360 feet

Answer

FDOT and AASHTO require approximately 360 feet of stopping sight distance at a design speed of 55 mph, based on reaction time and braking distance.

Question 2

What does 'K-value' represent in FDOT vertical curve design?

Accepted Answer

The ratio of curve length to algebraic difference in grades

Answer

The K-value is the length of vertical curve (in feet) per 1% change in grade, used to determine adequate sight distance over crest curves and comfort on sag curves.

Question 3

According to FDOT standards, what is the maximum grade allowed for a principal arterial in a level terrain area?

Accepted Answer

6%

Answer

FDOT allows a maximum grade of 6% on principal arterials in level terrain, balancing drainage needs with truck performance requirements.

Question 4

What is the purpose of a 'clear zone' in FDOT roadway design?

Accepted Answer

The roadside area clear of obstacles where an errant vehicle can recover

Answer

The clear zone is the unobstructed roadside area adjacent to the travel lane where an errant vehicle can recover control or stop safely without hitting fixed objects.

Question 5

What FDOT publication establishes access management standards for the State Highway System?

Accepted Answer

FDOT Access Management Manual

Answer

The FDOT Access Management Manual establishes standards for controlling access points, medians, and turn lanes on the State Highway System.

FDOT - Florida Department of Transportation Practice Test

FDOT - Florida Department of Transportation Practice Test

FDOT Roadway Design and Geometric Standards 2