Exam (elaborations)
IMSA Signal I Test with Correct Answers
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IMSA Signal I Test with Correct Answers
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IMSA Signal I Test with Correct AnswersMinimum time that the green indication must be displayed Correct Ans-A definition for
initial green time
Yield point Correct Ans-the only point in a cycle of a coordinated traffic signal controller
where the major-street phase is allowed to end
Rigid and free-swinging Correct Ans-two common terms to describe traffic signal supports
and signal heads are:
messenger wire Correct Ans-in a single wire with a single point attachment configuration,
the wire that supports the signal heads is called the:
8 in, 12 in Correct Ans-the two nominal diameter sizes for vehicular signal lenses are:
make signal visible from a specific lane Correct Ans-the purposes of *louvers* is to:
, IMSA Signal I Test with Correct Answers
Rigid steel conduit, high density polyethylene (HDPE), PVC schedule 40 Correct Ans-
conduit types for traffic signals
large foundation Correct Ans-a disadvantage of mast arms
Lamp socket, lens, reflector Correct Ans-components of the optical unit for an
incandescent lamp
truss supports, monotube supports, pedestal supports Correct Ans-methods of signal
supports
at least 6" Correct Ans-for pedestrian signals controlling crosswalks less than 100 feet,
what is the required height of the symbols themselves:
Inductance Correct Ans-loop detectors operate on the principle of:
lead-in cable Correct Ans-the piece of cable that connects the controller cabinet to the
loops is called a:
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