Human Factors Engineering: P54 Design Considerations And Human Factors Decisions on Project54 in-car system

Car 54 Where are you ?

Lights and Siren Scenario Typical Cruiser Take hand off wheel Find control head Switch on strobes Switch on wigwags Switch on siren P54 Equipped Cruiser Say “Lights and Siren” The officer is dispatched to an emergency situation and must respond in “Code 3”

High-Speed Pursuit Scenario Typical Cruiser Take hand off wheel Find control head Turn on lights Turn on siren Start video recorder Determine location Pick up radio mic Alert other officers Update location P54 Equipped Cruiser Say “Pursuit” The officer needs to pursue a suspect at high speeds

The Problem

The solution

The Design Approach Objectives: Objectives: Officer Safety, improved environment and efficiency Constraints:cost space limits power existing infrastructure

Human Factors Method  Step 1: Workplace Analysis  Step 2: System Development  Step 3: GUI Design  Step 4: Prototype testing  Step 5:Implementation  Step 6:Feedback

Workplace Analysis  Studied current workplace in operation  Discussed observation with the user  Analyzed most frequent tasks  Developed workplace modification  Tested Prototype Designs - lab  Tested Prototype Designs - “in the shop”  Implemented Design - feedback

Study of Workplace  Examination 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” Cut down a wrecked 1995 Chevrolet Cruiser Cut down a wrecked 1995 Chevrolet Cruiser Made it moveable with cab left intact Made it moveable with cab left intact  Evaluation of Solutions Installed into “test” vehicles to refine system Installed into “test” vehicles to refine system Interview users to gather data and revise system Interview users to gather data and revise system Iterate as required Iterate as required

System Development  Critical Factor - officer Safety Driving Distractions Driving Distractions Accidents caused by mobile informationAccidents caused by mobile information Dangerous Situations Dangerous Situations Distractions that lead to danger for OfficersDistractions that lead to danger for Officers Poor communications Poor communications Danger generated by lack of informationDanger generated by lack of information

Solutions  Component integration Centralized control and command Centralized 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 Devices Network connected Devices IDB /CAN2B electrically parallel networkIDB /CAN2B electrically parallel network Allows flexible device placementAllows flexible device placement Standards based Standards based Network and interface standards (serial, CAT5)Network and interface standards (serial, CAT5)

Solutions - continued  GUI design Base input device selected on application Base 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 - continued  Prototype Testing UNH test vehicles - the first step UNH test vehicles - the first step NHSP 954 carNHSP 954 car UNH TahoeUNH Tahoe NHSP “show car”NHSP “show car” Special Officer testing program - 2 phase Special 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

Implementation  Build parts supplier’s and Inventory Parts need to be available Parts need to be available  Build and production schedule Tie schedule to installers load Tie schedule to installers load  Hire and train install technicians  Build out NHSP vehicles in phase I  Start with physically close PD’s to accomplish local PD buildout.

Implementation Continued Modify system as build out continues … Match to new needs Commercial adaptation Discovery of new requirements

Feedback  Part of program overall plan - required of PD’s  Continue practice of “Ride alongs” to collect data  During Training collect information  Analyze all collected data to decide on future enhancements and development

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