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Imsa questions and answers verified 2024
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Imsa questions and answers verified 2024
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Imsa #2A traffic cycle / ( cycle length ) definition is ? - correct answer ✔Is the total
elapsed Time between the start of a specific display until the display comes
up again.
Example ( if the cycle starts at the beginning of a green display it will end
when The same green display begins again after the red and yellow displays
have been given.
The acronym AWG stands for what ? - correct answer ✔American wire
gauge
Americans with disabilities act of 1990 (ADA) is ? - correct answer
✔Requirements ensuring equal opportunity for persons with disabilities and
employment, state and local government services, Public accommodations,
commercial facilities and transportation
The acronym (CMS) stands for what ? - correct answer ✔Changeable
message sign
Changeable message sign is for what ? - correct answer ✔Also known as
variable message sign (VMS) and dynamic message sign (DMS) CMS are
traffic control devices used for traffic warning, regulation, routing and
management, and are designed to affect the behavior of motorist ( thus
improve the flow of traffic) by providing real time highway related information
What is a (Beacon)? - correct answer ✔A highway traffic signal with one or
more signal sections that operates in a flashing mode.
,The acronym (ITS) stands for what ? - correct answer ✔Intelligent
transportation systems
intelligent transportation systems (ITS) what does it do? - correct answer
✔Improves transportation safety and mobility and enhances productivity
through the use of advanced information and communications technologies.
ITS encompass a broad range wireless and wire line communications based
information and electronics technologies (ITS)
What is a (major street) ? - correct answer ✔The street normally carrying the
higher volume of vehicular traffic
The acronym (MMU)stands for ? - correct answer ✔Malfunction
Management Unit
Malfunction management unit is ? - correct answer ✔A device used to
continually check for the presence of conflicting signal indications and other
malfunctions and to provide an output response to conflict or malfunction.
MMU is an advance type of conflict monitor that also communicates and
monitors controller function.
What is a minor street? - correct answer ✔That street normally carrying
lower volume of vehicular traffic
What is "offset" - correct answer ✔The time difference, or interval in seconds
or percentage of cycle length between the start of the green indication of the
coordinated phase and the system reference signal
What is a "platoon" - correct answer ✔A group of vehicles or pedestrians
traveling together as a group, either voluntarily or involuntarily, because of
traffic signal controls ,geometrical or other factors
,What is a "preemption control"? - correct answer ✔The transfer of normal
operation of a traffic control signal to a special control mode of operation.
What is a "Queue length "? - correct answer ✔Number of vehicles stopped
or slowly moving in a line, where the movement of each vehicle is constrained
by that of the lead vehicle
What is a "signal warrant? - correct answer ✔A threshold condition that, if
found to be satisfied as part of an engineering study, shall results in analysis
of other traffic conditions or factors to determine whether a traffic control
signal or other equipment is justified
Which certification has level II and Level III ? - correct answer ✔Traffic signal
level II bench
Traffic signal level II construction
Traffic signal level II design
Traffic signal level II field
Traffic signal level III Bench
Traffic signal level III Electrician (field)
(Traffic signal phase )is ? - correct answer ✔Specific assigned timing
function in the traffic signal controller.
Are phases numbered 1 -8 ? True or false ? - correct answer ✔True
Even number phases are typically assigned to what movements? - correct
answer ✔Through movements
, Phases 2-6 are assigned to ? - correct answer ✔Major streets through
movements
Odd numbers ( 1,3,5,7) phases are assigned to what? - correct answer
✔Left turn phases
An intersection that has four through phases and four left turn phases are
considered how may phases together ? - correct answer ✔Eight phase
intersection
Each phase is comprised of intervals ?
True or false ? - correct answer ✔True
(Interval )is based on? - correct answer ✔The amount of TIME that a
particular indication is given during a phase
Another words, the total time assigned to a specific display.
An example of an ( interval ) is? - correct answer ✔" the amount of time that
a green indication is given during a particular phase. " (know as a "green
_______ )"
(Ring) in a traffic signal controller is? - correct answer ✔A Series of
conflicting phases that occur in simultaneously( same time ) with each other
What are the two typically ( ring ) that a traffic controller have ? - correct
answer ✔"Single-ring" or "dual ring"
What are other ( rings ) that are rarely used ? And when are these types of
rings used for? - correct answer ✔3 or 4 rings &
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