Human Factors Engineering: P54

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Human Factors Engineering P54

• Design Considerations
• And Human Factors
• Decisions on Project54 in-car system

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Car 54 Where are you ?
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Lights and Siren Scenario
The officer is dispatched to an emergency
situation and must respond in Code 3
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
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High-Speed Pursuit Scenario
The officer needs to pursue a suspect at high
speeds
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
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The Problem
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The solution
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The Design Approach

• Objectives
• Officer Safety, improved environment
• and efficiency
• Constraints
• cost
• space limits
• power
• existing infrastructure

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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

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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

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Study of Workplace

• Examination of Cruiser environment
• Examined equipment, control required and general
  use.
• Determined centralized control and interface
  required.
• Construction of the Lab Car
• Cut down a wrecked 1995 Chevrolet Cruiser
• Made it moveable with cab left intact
• Evaluation of Solutions
• Installed into test vehicles to refine system
• Interview users to gather data and revise system
• Iterate as required

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System Development

• Critical Factor - officer Safety
• Driving Distractions
• Accidents caused by mobile information
• Dangerous Situations
• Distractions that lead to danger for Officers
• Poor communications
• Danger generated by lack of information

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Solutions

• Component integration
• Centralized control and command
• Windows based PC - hardened for mobile use
• Master device on the IDB / CAN2B bus
• Allows different command style input to suit use
• Network connected Devices
• IDB /CAN2B electrically parallel network
• Allows flexible device placement
• Standards based
• Network and interface standards (serial, CAT5)

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Solutions - continued

• GUI design
• Base input device selected on application
• Driving based - voice required
• Minimal distraction - voice / touch screen
• Routine non-dangerous - standard interface
• Environment of police officers - frequency - work
  tasks

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Solutions - continued

• Prototype Testing
• UNH test vehicles - the first step
• NHSP 954 car
• UNH Tahoe
• NHSP show car
• Special Officer testing program - 2 phase
• State Police Based
• Selection based on Assignment, training attitude
• Spread from one car to 5 cars

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Implementation

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

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Implementation Continued

• Modify system as build out continues
• Match to new needs
• Commercial adaptation
• Discovery of new requirements

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Feedback

• Part of program overall plan - required of PDs
• Continue practice of Ride alongs to collect
  data
• During Training collect information
• Analyze all collected data to decide on future
  enhancements and development

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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.