“smart” ids interfaces and cooperative systems september, 2004 nicholas ward mick rakauskas...
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“Smart” IDS Interfaces and Cooperative Systems
September, 2004
Nicholas WardMick RakauskasJanet Creaser
HumanFIRST Program
TenetsFirst, do no harm
Compliance probably improve stateIgnorance does not change risk
Support system; driver is responsible
Driver stoppedCompliance good, complacency bad
Prohibitive rather than permissive
Protect liability
No interference with mainline
Maintain capacityIndirect awareness a bonus
Do not over-fit to case site
Generalizable solution
Out of box solution driven by problem
Provide new (intuitive) toolkit
Process
Task Analysis
Display F
ramew
ork
Experim
ent Design
Boundary F
actorsProblem Definition
AlertDriver must gather information, decide on safety condition, and choose action.
InformDriver must decide on safety condition, and choose action.
WarnDriver must choose action.
AdviseDriver must choose to comply.
Low Beacon Speedo Speedo VMS
High Split, Icon Split, Icon
Information Function:
Display Framework
Intersection Vehicle Parameters Gap Safe Location
Information Hierarchy:
Experiment DesignYoung, old groups
Benefit old groupNo harm to young group
Straight crossing maneuverMost crashes far side, straight
Day, night conditions*Ecological (Corridor has high night risk)Usability under suboptimal conditions
No instruction for sign meaning or purposeWhat is intuitive meaning of proposed signs?
Traffic orchestrated to accommodate one and two-stage maneuvers
What are population strategies?
Demonstration
Boundary FactorsThreshold based on “accepted” gap
Is this the same as a “safe” gap?
Threshold biased toward old drivers
How impact non-target groups? How individualize model?
Thresholds based on straight crossing
How recognize and apply intent?How modify if not stopped
Threshold based on one-stage
How detect and apply strategy?
Scripted traffic (smooth pattern)
How add “inertia” to display states?
No TrainingIf training (non-standard signs), how implement?
RoadsideSolution
Project IntegrationProblem Definition
Task A
nalysis
Design Framework
Concept Study
Design Features
Implem
entation
Deployable System
Verification Study
Testable SystemV
alidation StudyOperational System
Field O
peration Test
RoadsideCooperativeSolution
Implem
entationDeployable System
Verification Study
Testable System
Validation Study
Operational System
Field O
peration Test
Real World Data Integration
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