KDOT Traffic Signal & Signage Installation 4

Question 1

During signal head installation, what is the maximum allowable horizontal distance from the near edge of an intersection to a far-side signal head?

Accepted Answer

100 feet

Answer

MUTCD generally recommends far-side signal heads be placed no more than 100 feet beyond the stop line for adequate driver visibility.

Question 2

What is the correct procedure when a traffic signal controller fails and the intersection must operate in flash mode?

Accepted Answer

Flash yellow on the major street and red on the minor street

Answer

Standard flash mode uses flashing yellow for the major street (treat as caution) and flashing red for the minor street (treat as stop sign).

Question 3

What does the term 'sign legend' refer to?

Accepted Answer

The text, symbols, or combination displayed on the face of a sign

Answer

The sign legend is the message conveyed through text, symbols, arrows, or a combination displayed on the sign face.

Question 4

When installing traffic signal conduit underground, what minimum depth is typically required under pavement?

Accepted Answer

24 inches

Answer

Signal conduit installed under pavement typically requires a minimum cover of 24 inches to protect against damage from traffic loads.

Question 5

A pedestrian signal with a countdown timer helps pedestrians by:

Accepted Answer

Displaying the number of seconds remaining in the pedestrian crossing interval

Answer

Countdown pedestrian signals show the remaining seconds in the clearance interval, helping pedestrians decide whether to begin or complete crossing.

(KDOT) Certified Kansas Department of Transportation Inspector Practice Test