IMSA Traffic Signal Technician Level II Questions with Verified Answers |Latest 2024/2025, Exams of Law

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IMSA_;-Traffic_;-Signal_;-Technician_;-Level_;-II_;-

Questions_;-with_;-Verified_;-Answers._;-

What_;-responsibilities_;-(liability);-does;-a_;-Traffic_;-signal_;-technician_;-

have_;-while_;-involved_;-in_;-repair,;-testing;-or_;-maintenance?;-;- ;-Legal;-

liability

Dealing_;-with_;-the_;-public

Emergency_;-vehicles_;-should_;-be_;-set_;-to_;-which_;-level_;-of_;-priority?;-;- _;-

Medium_;-priority

When_;-there_;-are_;-no_;-pedestrian_;-features_;-the_;-minimum_;-green_;-time_;-

should_;-be_;-calculated_;-by?;-;- ;-At;-least_;-equal_;-the_;-minimum_;-time_;-it_;-

would_;-take_;-a_;-pedestrian_;-to_;-safely_;-cross_;-the_;-intersection.

Describes_;-the_;-direction_;-of_;-approach_;-and_;-the_;-maneuver_;-made_;-at_;-

the_;-intersection?;-;- ;-(Vehicle);-Movement

Vehicle_;-movements_;-are_;-usually_;-recorded_;-in_;-a_;-"what";-that;-is_;-

typically_;-included_;-in_;-the_;-plans_;-for_;-a_;-traffic_;-signal?;-;- ;-Timing;-

chart

How_;-are_;-vehicle_;-phases_;-typically_;-numbered?;-;- _;- 1 ;-through;- 8

Which_;-numbers_;-in_;-a_;-vehicle_;-phase_;-a_;-assigned_;-to_;-the_;-through_;-

movements?;-;- ;-Even;-numbers

Which_;-numbers_;-are_;-assigned_;-to_;-the_;-left_;-turn_;-movements_;-in_;-a_;-

vehicle_;-phase?;-;- ;-Odd;-numbers

It_;-is_;-imperative_;-that_;-the_;-traffic_;-signal_;-field_;-technician_;-maintain_;-

comprehensive_;-what_;-of_;-all_;-the_;-steps_;-taken_;-during_;-repair_;-and_;-

maintenance_;-of_;-traffic_;-signals?;-;- _;-Documentation

What_;-two_;-instances_;-are_;-documentation_;-required_;-for_;-a_;-traffic_;-

signal_;-field_;-technician?;-;- ;-Routine;-maintenance

Emergency_;-repair

The_;-"word";-public;-usually_;-represents_;-the_;-following_;-individuals_;-

(4):;-;- ;-Road;-users

Area_;-residents_;-/;-Property;-owners

Elected_;-and_;-appointed_;-officials_;-

The_;-media

Several_;-means_;-of_;-public_;-interaction_;-are_;-(3):;-;- ;-Mail;-or_;-email

Telephone_;-contact

Face_;-to_;-face_;-meetings

When_;-dealing_;-with_;-the_;-public,;-keep;-in_;-mind_;-that_;-the_;-routines_;-of_;-

public_;-users_;-may_;-be_;-disrupted_;-for_;-periods_;-of_;-time_;-during_;-

construction.;-How;-should_;-a_;-traffic_;-signal_;-field_;-technician_;-interact_;-

with_;-the_;-public?;-(5);-;- ;-Always;-be;-polite

Be_;-confident_;-when_;-speaking

Communicate_;-clearly_;-in_;-understandable_;-terminology

Don't_;-argue_;-or_;-threaten

Don't_;-provide_;-information_;-if_;-you_;-are_;-uncertain_;-of_;-its_;-accuracy.

Traffic_;-signal_;-controller_;-units_;-of_;-todays_;-traffic_;-systems_;-are_;-

controlled_;-by_;-what?;-;- _;-Microprocessor

The_;-microprocessor_;-is_;-programmed_;-to_;-recognize_;-what?;-;- _;-

Input_;-requests_;-from_;-vehicle_;-detection_;-systems

A_;-microprocessor_;-takes_;-appropriate_;-action_;-to_;-control_;-

intersection_;-what?;-;- _;-Timing

A_;-forerunner_;-of_;-the_;-electronic_;-controllers_;-that_;-we_;-have_;-today_;-

was_;-the?;-;- ;-Electro-mechanical;-controller

What_;-year_;-where_;-solid_;-state_;-electronic_;-controllers_;-developed_;-to_;-

replace_;-the_;-electro-mechanical_;-controllers?;-;- _;-1970's

What_;-two_;-improvements_;-differentiated_;-electronic_;-controllers_;-

from_;-electro-mechanical_;-controllers?;-;- ;-More;-dependable

Added_;-many_;-more_;-features

What_;-was_;-the_;-standardization_;-that_;-primarily_;-established_;-a_;-pin_;-

configuration_;-in_;-the_;-controller_;-and_;-defined_;-a_;-function_;-for_;-every_;-

pin?;-;- ;-NEMA;-TS- 1

The_;-NEMA_;-TS- 1 ;-has;-three_;-connectors_;-which_;-where_;-known_;-as:;-;-

;-A,B,;-and_;-C_;-connectors

NEMA_;-TS- 1 ;-had;-how_;-many_;-connectors?;-;- _;-Three

The_;-NEMA_;-TS- 1 ;-defined;-every_;-pin_;-for_;-each_;-connector_;-as_;-either_;-

what_;-two_;-connection_;-types?;-;- ;-Input;-or_;-Output

NEMA_;-also_;-allowed_;-manufactures_;-to_;-add_;-an_;-additional_;-feature_;-

on_;-the_;-fourth_;-connector.;-What;-was_;-this_;-connector_;-know_;-as?;-;- _;-

D_;-connector

What_;-was_;-the_;-D_;-connector_;-commonly_;-used_;-for?;-;- _;-

Communications

Pre-emption_;-

Other_;-special_;-features

What_;-three_;-agencies_;-joined_;-together_;-to_;-help_;-develop_;-the_;- 170 _;-

controller?;-;- ;-California;-DOT

City_;-of_;-Los_;-Angeles_;-California

New_;-York_;-State_;-DOT

What_;-controller_;-is_;-an_;-open-architecture_;-based_;-general_;-purpose_;-

microcomputer_;-for_;-traffic_;-control?;-;- ;-Model;- 170 _;-controller

What_;-two_;-specifications_;-does_;-the_;-model_;- 170 ;-controller;-require?;-;-

;-A;-specific_;-hardware_;-architecture

A_;-specific_;-processor

How_;-is_;-the_;-Type_;- 179 ;-controller;-specification_;-similar_;-to_;-the_;- 170 _;-

specification?(2);-;- ;-Open;-architecture

Allows_;-for_;-interchangeability_;-of_;-components

What_;-is_;-the_;-primary_;-difference_;-between_;-the_;- 179 ;-and;- 170 _;-

controller_;-;- ;-Uses;-a;-different_;-microprocessor

Who_;-developed_;-the_;-model_;- 2070 ;-controller?;-_;- _;-CALTRANS

The_;- 2070 ;-was;-introduced_;-to_;-supersede_;-which_;-controller?;-;- _;-

The_;- 170 _;-controller

Which_;-controller_;-is_;-compatible_;-regardless_;-of_;-the_;-manufacturer?;-;-

;-The;- 2070 _;-controller

The_;- 2070 ;-provides;-more_;-functionality_;-than_;-the_;- 170 ;-because;-of_;-

what_;-features?(3);-;- ;-Additional;-processing_;-power

Ability_;-to_;-program_;-in_;-higher_;-level_;-languages

Multiple_;-high_;-speed_;-communications_;-ports

Define_;-the_;-acronym_;-NTCIP_;-;- ;-National;-Transportation;-

Communications_;-for_;-Intelligent_;-transportation_;-systems_;-Protocol

What_;-is_;-a_;-set_;-of_;-standards_;-established_;-by_;-the_;-consortium_;-for_;-

controllers,;-cabinets;-and_;-other_;-ITS_;-devices?;-;- ;-The;-NTCIP

The_;-National_;-Transportation_;-Communication_;-for_;-ITS_;-protocol_;-

was_;-developed_;-to_;-accommodate_;-what_;-two_;-things?;-;- ;-Needs;-of_;-

subsystems

User_;-Services

Traffic_;-signal_;-supports_;-and_;-the_;-signal_;-indications_;-and_;-signs_;-that_;-

are_;-attached_;-to_;-them_;-should_;-be_;-periodically_;-reviewed_;-to_;-ensure_;-

what?;-;- ;-That;-they_;-are_;-performing_;-the_;-function_;-that_;-they_;-were_;-

installed_;-to_;-do.

Safety_;-of_;-what_;-two_;-entities_;-is_;-the_;-first_;-concern_;-when_;-performing_;-

maintenance_;-on_;-traffic_;-signal_;-supports?;-;- _;-Workers

The_;-public

The_;-traffic_;-field_;-signal_;-technician_;-should_;-review_;-the_;-work_;-to_;-be_;-

performed_;-to_;-ensure_;-that_;-all_;-necessary_;-"what";-is;-ready_;-and_;-

available?;-(2);-_;- ;-Equipment;-

Inventory

Traffic_;-signal_;-support_;-poles_;-that_;-have_;-a_;-span_;-wire_;-assembly_;-

attached_;-to_;-them_;-are_;-called_;-what?;-;- ;-Strain;-poles

Strain_;-poles_;-are_;-designed_;-to_;-withstand_;-the_;-strain_;-from_;-the_;-loads_;-

that_;-are_;-placed_;-on_;-them_;-by_;-what_;-two_;-items?;-;- ;-Traffic;-Signals

Support_;-cables

The_;-reinforcing_;-on_;-a_;-concrete_;-strain_;-pole_;-is_;-arranged_;-to_;-primarily_;-

withstands_;-loads_;-in_;-how_;-many_;-directions?;-;- ;-One;-direction

The_;-side_;-of_;-the_;-pole_;-that_;-is_;-to_;-be_;-turned_;-toward_;-the_;-load_;-is_;-

called?;-;- ;-The;-load_;-face

Overhead_;-signs_;-used_;-in_;-traffic_;-signals_;-are_;-what_;-two_;-types?;-;- _;-

Regulatory_;-signs

Street_;-name_;-signs

How_;-are_;-"blank-out";-signs;-illuminated?;-;- _;-Internally

When_;-are_;-blank-out_;-signs_;-only_;-activated?;-(2);-;- ;-Specific;-times;-

of_;-day

Specific_;-events

Several_;-considerations_;-must_;-be_;-made_;-before_;-actively_;-engaging_;-

in_;-work_;-with_;-a_;-lift_;-truck,;-these;-include_;-(5):;-;- ;-Positioning;-if_;-the_;-

vehicle_;-in_;-or_;-adjacent_;-to_;-the_;-roadway

Establishing_;-a_;-temporary_;-traffic_;-control_;-zone

Verification_;-of_;-overhead_;-conflicts

Planning_;-the_;-work_;-to_;-be_;-performed

Using_;-an_;-approved_;-safety_;-harness

Bucket_;-trucks_;-may_;-have_;-a_;-boom_;-that_;-is_;-capable_;-of_;-rotating_;-and_;-

extending_;-which_;-is_;-called?;-;- ;-Articulating;-boom

What_;-are_;-some_;-disadvantages_;-of_;-an_;-aerial_;-platform_;-lift?(4);-;- _;-

Only_;-extends_;-vertically

Cannot_;-reach_;-as_;-high_;-as_;-boom_;-trucks

Must_;-be_;-parked_;-on_;-flat_;-ground

Must_;-be_;-positioned_;-directly_;-below_;-work_;-area.

The_;-primary_;-purpose_;-of_;-the_;-traffic_;-signal_;-monitor_;-unit_;-is_;-to_;-act_;-

as?;-;- ;-Guard;-against_;-system_;-malfunction

If_;-a_;-malfunction_;-is_;-present_;-the_;-monitoring_;-unit_;-will_;-automatically_;-

put_;-the_;-intersection_;-into_;-what_;-mode?;-;- ;-Flashing;-condition

An_;-intersection_;-will_;-remain_;-in_;-flash_;-mode_;-until_;-the_;-monitor_;-unit_;-

is?;-;- _;-Reset

The_;-CMU_;-and_;-MMU_;-checks_;-the_;-controller_;-for_;-what_;-two_;-things?;-;-

;-Proper;-power

Timing_;-functions

What_;-will_;-cause_;-the_;-monitor_;-(CMU);-to;-transfer_;-the_;-intersection_;-

into_;-flash_;-mode?(3);-;- ;-Loss;-of_;-power_;-to_;-the_;-controller

The_;- 24 ;-volt;-DC_;-voltage_;-of_;-the_;-controller_;-is_;-lost

Time_;-it_;-takes_;-to_;-change_;-from_;-one_;-indication_;-to_;-another_;-is_;-

incorrect

What_;-does_;-each_;-conflict_;-monitor_;-have_;-that_;-is_;-unique_;-for_;-that_;-

particular_;-intersection_;-_;- ;-Program;-card

What_;-are_;-short_;-lengths_;-of_;-conductors_;-on_;-the_;-program_;-card_;-

called?;-;- _;-Jumpers

On_;-the_;-program_;-card_;-jumpers_;-are_;-installed_;-to_;-tell_;-the_;-unit_;-

"what";-are;-considered_;-compatible?(2);-;- _;-Movements

Channels

For_;-NEMA_;-type_;-controllers_;-positions_;-not_;-having_;-jumpers_;-are_;-

considered_;-as?;-;- _;-Conflicts

Program_;-cards_;-for_;-type_;- 170 ;-controllers;-use_;-a_;-"what";-as;-a_;-jumper_;-

to_;-wire_;-the_;-positions_;-which_;-are_;-considered_;-conflicts?;-;- _;-Diode

Why_;-is_;-it_;-important_;-to_;-periodically_;-review_;-the_;-monitor_;-cards?;-;-

;-To;-be_;-sure_;-the_;-jumpers_;-are_;-assigned_;-correctly

What_;-is_;-used_;-to_;-provide_;-the_;-required_;-flash_;-rate_;-when_;-the_;-signal_;-

is_;-in_;-flashing_;-operation?;-;- ;-Flasher;-unit

The_;-MUTCD_;-requires_;-that_;-when_;-a_;-signal_;-is_;-flashed_;-that_;-the_;-light_;-

source_;-be_;-flashed_;-at_;-a_;-rate_;-of?;-;- ;-Not;-less_;-than_;- 50 ;-or;-more_;-

than_;- 60 ;-times;-per_;-minute

What_;-relays_;-are_;-a_;-type_;-of_;-relay_;-that_;-is_;-capable_;-of_;-switching_;-high_;-

levels_;-of_;-current?;-;- ;-Mercury;-Contactor

In_;-a_;-traffic_;-signal_;-cabinet_;-the_;-mercury_;-contactor_;-controls_;-the_;- 120 _;-

VAC_;-to_;-all_;-of_;-the?;-;- ;-Load;-switches

These_;-devices_;-are_;-being_;-replaced_;-by_;-many_;-agencies_;-due_;-to_;-what_;-

type_;-of_;-concerns?;-;- _;-Environmental

What_;-are_;-used_;-in_;-traffic_;-signal_;-controller_;-cabinets_;-that_;-are_;-solid-

state_;-devices_;-that_;-monitor_;-a_;-mechanical_;-switch_;-or_;-button_;-and_;-

report_;-the_;-call_;-status_;-back_;-to_;-the_;-controller_;-unit?;-;- _;-Isolators

What_;-are_;-the_;-two_;-basic_;-types_;-of_;-isolator_;-or_;-isolator_;-cards?;-;- _;-

AC_;-isolators

DC_;-isolators

What_;-are_;-the_;-most_;-common_;-isolator_;-cards?;-;- ;-Loop;-detector_;-

cards

What_;-are_;-two_;-other_;-special_;-purpose_;-cards?;-;- ;-Video;-detector_;-

cards

Emergency_;-vehicle_;-pre-emption

Load_;-switches_;-in_;-the_;-controller_;-cabinet_;-receive_;-24V_;-DC_;-and_;-

switch_;-(reroute);-the;-120V_;-AC_;-to_;-the_;-lamps_;-in_;-the_;-signal_;-head._;-

This_;-potentially_;-reduces:;-(2);-;- ;-The;-number;-of_;-faults_;-induced_;-

into_;-the_;-controller_;-from_;-outside_;-the_;-cabinet.

Electrical_;-surges

Why_;-do_;-some_;-agencies_;-operate_;-signals_;-in_;-full_;-operation_;-mode_;-

for_;-a_;-period_;-of_;-time,;-then;-switch_;-to_;-flashing_;-mode?;-;- ;-To;-

preserve_;-the_;-battery_;-life

Battery_;-backup_;-system_;-manufactures_;-claim_;-that_;-switching_;-to_;-red_;-

flashing_;-operation_;-at_;-"what_;-battery";-level;-percent_;-significantly_;-

extends_;-run_;-time?;-;- _;-40%

What_;-type_;-of_;-backup_;-power_;-systems_;-require_;-significant_;-

manpower_;-and_;-monitoring_;-during_;-use?;-;- ;-Portable;-generator

Intersections_;-using_;-LED_;-displays_;-use_;-approximately_;-what_;-%;-of;-

power_;-that_;-incandescent_;-displays_;-use?;-;- _;-10%

What_;-piece_;-of_;-test_;-equipment_;-can_;-be_;-directly_;-connected_;-to_;-

many_;-different_;-traffic_;-signal_;-control_;-equipment_;-groups?;-;- _;-

Laptop_;-computer

What_;-are_;-several_;-of_;-the_;-functions_;-a_;-laptop_;-computer_;-can_;-

perform_;-in_;-relation_;-to_;-a_;-traffic_;-signal_;-controller?(5);-;- ;-Set;-up_;-

equipment

Download_;-operational_;-parameters_;-to_;-the_;-equipment

Upload_;-signal_;-system_;-software

Upload_;-traffic_;-signal_;-timing_;-plans

Set_;-up_;-video_;-detection

What_;-are_;-the_;-two_;-typical_;-forms_;-of_;-interconnectivity_;-for_;-testing_;-

equipment?;-;- ;-Ethernet;-cable

Serial_;-communication_;-cable

What_;-type_;-of_;-software_;-program_;-is_;-typically_;-used_;-as_;-a_;-user_;-

interface?;-;- ;-Windows;--;-based;-graphical_;-user_;-interface

What_;-is_;-also_;-known_;-as_;-volt/ohm_;-meter_;-or_;-VOM_;-_;- _;-multi-meter

What_;-is_;-an_;-electronic_;-measuring_;-instrument_;-that_;-combines_;-

several_;-functions_;-into_;-one_;-unit?;-;- _;-multi-meter

A_;-standard_;-multi-meter_;-includes_;-what_;-three_;-main_;-measurement_;-

features?;-;- _;-Voltage

Current

Resistance

A_;-multi-meter_;-provides_;-the_;-ability_;-to_;-measure?(3);-;- ;-DC;-and_;-

AC_;-voltage

DC_;-and_;-AC_;-current

Resistance

What_;-are_;-the_;-two_;-types_;-of_;-multi-meters?;-;- _;-Analog

Digital

Digital_;-multi-meter_;-functions:(5);-;- ;-High;-input_;-impedance

Automatic_;-ranging_;-of_;-measurements

Automatic_;-polarity_;-identification

Sample_;-and_;-hold_;-circuitry

Provides_;-a_;-greater_;-number_;-of_;-testing_;-functions

Analog_;-multi-meter_;-functions:(3);-;- ;-Low;-impedance

Fast_;-meter_;-reaction_;-time(measurement_;-time)

Provides_;-a_;-quick_;-go_;-or_;-no-go_;-indication

What_;-is_;-a_;-device_;-that_;-measures_;-the_;-current_;-flowing_;-through_;-a_;-

wire_;-or_;-circuit?;-;- _;-Ammeter

Ammeters_;-are_;-also_;-known_;-as?(5);-;- ;-Clamp-on;-ammeter

Amprobe

Clamp_;-meter

Current_;-probe

Tong_;-tester

Which_;-test_;-equipment_;-works_;-by_;-reading_;-the_;-magnetic_;-field_;-

around_;-the_;-conductor?;-;- _;-Ammeter

What_;-is_;-a_;-unit_;-that_;-a_;-signal_;-technician_;-uses_;-to_;-troubleshoot_;-

existing_;-loops_;-and_;-test_;-newly_;-installed_;-loops?;-;- ;-Loop;-Analyzer

What_;-does_;-a_;-loop_;-analyzer_;-measure?(5);-;- ;-Frequency;-

Relative_;-strength

Impedance

Change_;-in_;-inductance_;-when_;-vehicle_;-is_;-present

Resistance

Define_;-TDR?;-;- ;-Time;-domain_;-reflectometer

What_;-is_;-an_;-electronic_;-instrument_;-used_;-to_;-characterize_;-and_;-locate_;-

faults_;-in_;-metallic_;-cables?;-;- ;-TDR;--;-time;-domain_;-reflectometer

Because_;-of_;-the_;-sensitivity_;-to_;-impedance_;-variations,;-a;-TDR_;-may_;-

be_;-used_;-to:;-(3);-;- ;-Verify;-cable;-impedance_;-characteristics

Splice_;-and_;-connector_;-locations

Estimate_;-cable_;-lengths

What_;-is_;-a_;-single_;-sequence_;-of_;-displays_;-that_;-gives_;-each_;-movement_;-

at_;-the_;-intersection_;-a_;-chance_;-to_;-proceed_;-through_;-the_;-intersection_;-

on_;-a_;-green_;-indication?;-;- _;-Cycle

The_;-traffic_;-field_;-technician_;-is_;-responsible_;-for_;-performing_;-what_;-

types_;-of_;-maintenance_;-on_;-signals?;-;- ;-Preventive;-and_;-Emergency

The_;-single_;-most_;-important_;-focus_;-for_;-the_;-traffic_;-signal_;-field_;-

technician_;-is?;-;- _;-Safety

Three_;-main_;-categories_;-of_;-safety_;-a_;-traffic_;-signal_;-technician_;-is_;-

responsible_;-for?;-;- ;-Safety;-of_;-motorist_;-and_;-pedestrians

His_;-or_;-her_;-own_;-personal_;-safety

Safety_;-of_;-public_;-and_;-personal_;-property

Traffic_;-signal_;-field_;-technicians_;-perform_;-several_;-maintenance_;-and_;-

repair_;-functions_;-above_;-the_;-ground_;-and_;-roadway_;-typically_;-using_;-

what_;-two_;-vehicles?;-;- ;-Bucket;-Truck

Aerial_;-lift_;-(platform_;-truck)

While_;-using_;-a_;-bucket_;-truck_;-or_;-aerial_;-lift_;-what_;-implement_;-provides_;-

proper_;-protection_;-for_;-the_;-user?;-;- ;-Protective;-Harness

What_;-is_;-the_;-total_;-number_;-of_;-seconds_;-between_;-the_;-start_;-of_;-a_;-

specific_;-display_;-until_;-that_;-display_;-comes_;-up_;-again_;-called?;-;- _;-

Cycle_;-length

In_;-older_;-electro-mechanical_;-controllers_;-the_;-cycle_;-is_;-sometimes_;-

referred_;-to_;-as_;-a?;-;- _;-Dial

Which_;-phases_;-are_;-typically_;-assigned_;-to_;-the_;-major-street_;-through_;-

movements?;-;- _;- 2 ;-and;- 6

The_;-through_;-phases_;-are_;-numbered_;-in_;-which_;-direction_;-and_;-start_;-

with_;-which_;-phase?;-;- ;-Clockwise;-direction

Phase_;- 2

An_;-intersection_;-that_;-has_;-four_;-through_;-phases_;-and_;-four_;-protected_;-

left-turn_;-phases_;-is_;-said_;-to_;-be_;-an_;-"what";-intersection?;-_;- _;-Eight-

phase

What_;-is_;-most_;-commonly_;-associated_;-with_;-a_;-specific_;-vehicular_;-or_;-

pedestrian_;-movement?;-;- ;-Traffic;-signal_;-phase

What_;-is_;-the_;-amount_;-of_;-time_;-that_;-a_;-particular_;-indication_;-is_;-given_;-

during_;-a_;-phase?;-;- _;-Interval

Each_;-vehicular_;-phase_;-is_;-usually_;-comprised_;-of_;-three_;-specific_;-

intervals:;-;- ;-Green;-interval

Yellow_;-change_;-interval

Red_;-clearance_;-interval

What_;-is_;-a_;-series_;-of_;-conflicting_;-phases_;-that_;-occur_;-in_;-an_;-

established_;-order,;-but;-can_;-never_;-occur_;-simultaneously_;-with_;-each_;-

other?;-;- ;-Ring;-of_;-a_;-traffic_;-signal_;-controller

Controllers_;-typically_;-have_;-what_;-two_;-types_;-of_;-ring_;-operation?;-;- _;-

Single

Dual

The_;-number_;-of_;-rings_;-is_;-dependent_;-upon_;-"what";-that;-is_;-required_;-

for_;-the_;-intersection_;-operation?;-;- _;-Phasing

When_;-are_;-controllers_;-with_;- 3 ;-or;- 4 ;-rings;-typically_;-used?;-;- ;-When;-

two_;-or_;-more_;-separate_;-intersections_;-are_;-controlled_;-by_;-a_;-single_;-

controller

What_;-are_;-phases_;-that_;-cannot_;-happen_;-at_;-the_;-same_;-time_;-because_;-

they_;-conflict_;-with_;-one_;-another?;-;- ;-Sequential;-phases

In_;-a_;-sequential_;-series_;-of_;-phases_;-how_;-many_;-phases_;-are_;-served_;-at_;-

a_;-time?;-;- _;-One

What_;-are_;-used_;-to_;-provide_;-signalization_;-for_;-specific_;-movements_;-

that_;-can_;-be_;-made_;-while_;-some_;-of_;-the_;-other_;-phases_;-of_;-the_;-traffic_;-

signal_;-cycle_;-are_;-being_;-served?;-;- _;-Overlaps

Overlaps_;-are_;-different_;-from_;-other_;-phases_;-because_;-they_;-cannot_;-

be?;-;- ;-Independently;-called_;-into_;-action

There_;-are_;-two_;-basic_;-types_;-of_;-overlaps,;-known;-as_;-what?;-;- _;-

Independent

Parent/child

What_;-type_;-of_;-signals_;-have_;-detectors_;-and_;-gap_;-counters,;-and;-can_;-

skip_;-phases?;-;- _;-Actuated

The_;-use_;-of_;-fully_;-actuated_;-instead_;-of_;-non-actuated_;-coordinated_;-

phases_;-can_;-do_;-what_;-two_;-things?;-;- ;-Better;-balance_;-volume-to-

capacity_;-ratios

Decrease_;-split_;-failures

What_;-phase_;-allows_;-left_;-turning_;-drivers_;-to_;-cross_;-a_;-conflicting_;-

traffic_;-stream_;-with_;-care_;-when_;-there_;-are_;-adequate_;-gaps_;-in_;-the_;-

opposing_;-traffic_;-flow?;-;- ;-Permissive;-left_;-turn

When_;-are_;-protected_;-only_;-left_;-turns_;-typically_;-used_;-?(3);-;- ;-High;-

volume_;-of_;-through_;-traffic

More_;-than_;-two_;-through_;-lanes

Intersection_;-with_;-constrained_;-sight_;-distance

What_;-phasing_;-occurs_;-when_;-the_;-left_;-turn_;-in_;-one_;-direction_;-gets_;-

the_;-left_;-turn_;-arrow_;-before_;-the_;-opposing_;-through_;-movement_;-gets_;-

the_;-circular_;-green,;-then;-the_;-opposing_;-left_;-turn_;-gets_;-the_;-green_;-

arrow_;-after_;-the_;-opposing_;-through_;-is_;-stopped?;-;- ;-Lead/lag;-left_;-

turn_;-phasing

What_;-are_;-the_;-two_;-types_;-of_;-flashing_;-mode_;-operation?;-;- _;-Yellow-

red_;-

Red-red

What_;-can_;-be_;-planned_;-for_;-either_;-scheduled_;-late-night_;-flashing_;-or_;-

scheduled_;-flashing_;-of_;-a_;-signal_;-that_;-is_;-only_;-needed_;-at_;-certain_;-

times_;-of_;-the_;-day_;-or_;-week,;-or;-emergency?;-;- ;-Flashing;-operation

What_;-mode_;-causes_;-flashing_;-circular_;-yellow_;-indications_;-to_;-the_;-

major_;-street_;-approaches_;-and_;-flashing_;-red_;-indications_;-are_;-shown_;-

to_;-the_;-minor_;-street_;-approaches?;-;- ;-Yellow-red;-flashing_;-mode

Flashing_;-red_;-indications_;-are_;-shown_;-to_;-every_;-approach_;-lane_;-to_;-

the_;-intersection.;-This;-type_;-of_;-flashing_;-operations_;-essentially_;-

provides_;-the_;-same_;-type_;-of_;-control_;-as_;-an_;-all-way_;-stop_;-control.;-;-

;-Red-red;-flashing_;-mode

What_;-traffic_;-signal_;-control_;-function_;-is_;-typically_;-enabled_;-by_;-an_;-on-

site_;-user_;-via_;-a_;-switch_;-selected_;-inside_;-the_;-police_;-panel?;-;- ;-Stop;-

time

What_;-term_;-defines_;-the_;-minimum_;-initial_;-time_;-that_;-the_;-minimum_;-

assured_;-green_;-is_;-displayed?;-;- ;-Minimum;-green

The_;-minimum_;-green_;-time_;-is_;-established_;-to_;-provide_;-what_;-to_;-the_;-

intersection.;-;- ;-Enough;-time_;-for_;-vehicles_;-stopped_;-between_;-the_;-

detector_;-and_;-the_;-stop_;-line_;-to_;-get_;-started_;-and_;-move_;-into_;-the_;-

intersection.

On_;-what_;-two_;-factors_;-is_;-minimum_;-green_;-time_;-dependent?;-;- _;-

The_;-location_;-of_;-the_;-detector.

The_;-number_;-of_;-vehicles_;-that_;-can_;-be_;-queued

When_;-establishing_;-the_;-minimum_;-green_;-time_;-consideration_;-must_;-

be_;-given_;-to(4):;-;- ;-Pedestrian;-timing

Density_;-operations

Controller_;-type

Detection_;-design

Typically_;-how_;-many_;-seconds_;-for_;-a_;-left-turn_;-phase?;-;- _;- 3 ;-to;- 7

How_;-many_;-seconds_;-for_;-a_;-minor_;-street_;-through_;-phase?;-;- _;- 5 ;-to;-

How_;-many_;-seconds_;-for_;-a_;-major_;-street_;-through_;-phase?;-;- _;- 15 ;-to;-

The_;-minimum_;-green_;-time_;-must_;-be_;-long_;-enough_;-to?;-;- ;-Meet;-

drivers_;-expectations_;-as_;-to_;-how_;-long_;-a_;-green_;-interval_;-should_;-be_;-

displayed.

What_;-is_;-the_;-period_;-of_;-time_;-that_;-the_;-signal_;-displays_;-are_;-red_;-for_;-all_;-

approaches?;-;- ;-All-red;-clearance

This_;-interval_;-allows_;-for_;-the_;-intersection_;-to_;-"what";-before;-a_;-green_;-

phase_;-starts_;-again?;-;- _;-Clear

Factors_;-used_;-to_;-determine_;-the_;-most_;-appropriate_;-time_;-for_;-an_;-all_;-

red_;-clearance_;-include:;-;- ;-Type;-of_;-vehicular_;-traffic

Driver_;-characteristics

Pedestrian_;-activity_;-in_;-the_;-intersection

What_;-is_;-the_;-establishment_;-of_;-a_;-definite_;-timing_;-relationship_;-

between_;-adjacent_;-traffic_;-signals?;-;- ;-Coordination;-timing

Traffic_;-signal_;-coordination_;-timings_;-are_;-developed_;-to_;-provide_;-a_;-

degree_;-of_;-consistency_;-that_;-should_;-allow_;-traffic_;-to?;-;- ;-Progress;-

through_;-a_;-number_;-of_;-intersections_;-without_;-stopping

What_;-within_;-traffic_;-controllers_;-allow_;-for_;-timing_;-plans_;-to_;-transition_;-

from_;-one_;-to_;-another_;-gradually_;-so_;-that_;-traffic_;-is_;-not_;-severely_;-

disrupted?;-;- _;-Algorithms

The_;-amount_;-of_;-time_;-that_;-is_;-allocated_;-to_;-a_;-particular_;-signal_;-phase_;-

is_;-the_;-phases?;-;- _;-Split

A_;-split_;-includes_;-what_;-three_;-things_;-associated_;-with_;-the_;-phase?;-;-

;-Green;-time

Yellow_;-time_;-

Red_;-time

What_;-is_;-the_;-transfer_;-of_;-the_;-normal_;-control_;-of_;-signals_;-to_;-a_;-special_;-

signal_;-control_;-mode?;-;- ;-Preemption;-timing

Preemption_;-timing_;-has_;-the_;-purpose_;-of_;-servicing?;-;- ;-Railroad;-

crossings

Emergency_;-vehicle_;-passage_;-

Mass_;-transit_;-vehicle_;-passage