Human Factors Human Factors Engineering: P54 Engineering: P54

Design Considerations Design Considerations

And Human FactorsAnd Human Factors

Decisions on Project54 in-car systemDecisions on Project54 in-car system

Car 54 Where are you ?Car 54 Where are you ?

Lights and Siren Scenario

Typical CruiserTake hand off wheelFind control headSwitch on strobesSwitch on wigwagsSwitch on siren

P54 Equipped CruiserSay “Lights and Siren”

The officer is dispatched to an emergency situation and must respond

in “Code 3”

High-Speed Pursuit Scenario

Typical CruiserTake hand off wheelFind control headTurn on lightsTurn on sirenStart video recorderDetermine locationPick up radio micAlert other officersUpdate location

P54 Equipped CruiserSay “Pursuit”

The officer needs to pursue a suspect at high speeds

The ProblemThe Problem

The solutionThe solution

The Design ApproachThe Design Approach

Objectives:Objectives:Officer Safety, improved environmentOfficer Safety, improved environmentand efficiencyand efficiency

Constraints:Constraints:costcostspace limitsspace limitspowerpowerexisting infrastructureexisting infrastructure

Human Factors MethodHuman Factors Method

Step 1: Workplace AnalysisStep 1: Workplace Analysis Step 2: System DevelopmentStep 2: System Development Step 3: GUI DesignStep 3: GUI Design Step 4: Step 4: Prototype testingPrototype testing Step 5:Step 5: ImplementationImplementation Step 6:Step 6: Feedback Feedback

Workplace AnalysisWorkplace Analysis

Studied current workplace in operationStudied current workplace in operation Discussed observation with the userDiscussed observation with the user Analyzed most frequent tasksAnalyzed most frequent tasks Developed workplace modificationDeveloped workplace modification Tested Prototype Designs - labTested Prototype Designs - lab Tested Prototype Designs - “in the shop”Tested Prototype Designs - “in the shop” Implemented Design - feedbackImplemented Design - feedback

Study of WorkplaceStudy of Workplace

Examination of Cruiser environmentExamination of Cruiser environment Examined equipment, control required and general use.Examined equipment, control required and general use. Determined centralized control and interface required.Determined centralized control and interface required.

Construction of the “Lab Car”Construction of the “Lab Car” Cut down a wrecked 1995 Chevrolet CruiserCut down a wrecked 1995 Chevrolet Cruiser Made it moveable with cab left intactMade it moveable with cab left intact

Evaluation of SolutionsEvaluation of Solutions Installed into “test” vehicles to refine systemInstalled into “test” vehicles to refine system Interview users to gather data and revise systemInterview users to gather data and revise system Iterate as requiredIterate as required

System DevelopmentSystem Development

Critical Factor - officer SafetyCritical Factor - officer Safety Driving DistractionsDriving Distractions

• Accidents caused by mobile informationAccidents caused by mobile information Dangerous SituationsDangerous Situations

• Distractions that lead to danger for OfficersDistractions that lead to danger for Officers Poor communicationsPoor communications

• Danger generated by lack of informationDanger generated by lack of information

SolutionsSolutions

Component integrationComponent integration Centralized control and commandCentralized control and command

• Windows based PC - hardened for mobile useWindows based PC - hardened for mobile use

• Master device on the IDB / CAN2B busMaster device on the IDB / CAN2B bus

• Allows different command style input to suit useAllows different command style input to suit use Network connected DevicesNetwork connected Devices

• IDB /CAN2B electrically parallel networkIDB /CAN2B electrically parallel network

• Allows flexible device placementAllows flexible device placement Standards basedStandards based

• Network and interface standards (serial, CAT5)Network and interface standards (serial, CAT5)

Solutions - continuedSolutions - continued

GUI designGUI design Base input device selected on applicationBase input device selected on application

• Driving based - voice requiredDriving based - voice required

• Minimal distraction - voice / touch screenMinimal distraction - voice / touch screen

• Routine non-dangerous - standard interfaceRoutine non-dangerous - standard interface

• Environment of police officers - frequency - work tasksEnvironment of police officers - frequency - work tasks

Solutions - continuedSolutions - continued

Prototype TestingPrototype Testing UNH test vehicles - the first stepUNH test vehicles - the first step

• NHSP 954 carNHSP 954 car

• UNH TahoeUNH Tahoe

• NHSP “show car”NHSP “show car” Special Officer testing program - 2 phaseSpecial Officer testing program - 2 phase

• State Police BasedState Police Based

• Selection based on Assignment, training attitudeSelection based on Assignment, training attitude

• Spread from one car to 5 carsSpread from one car to 5 cars

ImplementationImplementation

Build parts supplier’s and InventoryBuild parts supplier’s and Inventory Parts need to be availableParts need to be available

Build and production scheduleBuild and production schedule Tie schedule to installers loadTie schedule to installers load

Hire and train install techniciansHire and train install technicians Build out NHSP vehicles in phase IBuild out NHSP vehicles in phase I Start with physically close PD’s to accomplish Start with physically close PD’s to accomplish

local PD buildout.local PD buildout.

Implementation ContinuedImplementation Continued

Modify system as build out continues …Modify system as build out continues …

Match to new needsMatch to new needs

Commercial adaptationCommercial adaptation

Discovery of new requirementsDiscovery of new requirements

FeedbackFeedback

Part of program overall plan - required of PD’sPart of program overall plan - required of PD’s Continue practice of “Ride alongs” to collect Continue practice of “Ride alongs” to collect

datadata During Training collect informationDuring Training collect information Analyze all collected data to decide on future Analyze all collected data to decide on future

enhancements and developmentenhancements and development

Side bar - ResultSide bar - Result

Insurance underwriters for public safety feel Insurance underwriters for public safety feel that our system will offered them reduced risk that our system will offered them reduced risk and therefore they will offer cities and towns and therefore they will offer cities and towns lower insurance premiums, translating into real lower insurance premiums, translating into real cash savings.cash savings.