www.eurofot-ip.eu
Incident definition and usage
within the euroFOT project
22nd ICTCT-Workshop, Leeds
Dipl.-Ing. Mohamed Benmimoun
22 - 23.10.2009, Leeds
Institut für Kraftfahrzeuge (IKA)
www.eurofot-ip.eu
Agenda
• Introduction
• Importance of incident
• Incident definition
• Approach in euroFOT
• Current status
• Outlook
14.12.20092 ICTCT 22.Workshop, Leeds
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Introduction
Objectives of euroFOT• To assess the impacts of ADAS in real traffic, by focusing on the
analysis of:
safety
traffic efficiency
environment
driver behaviour
driver workload
user acceptance
usability
• Cost-benefit analysis, based on results from the impact
assessment
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Introduction
euroFOT• euroFOT project started in May 2008
• Project end in August 2011
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Importance of incident
Hypotheses• Incident definition necessary, due to pre-defined hypotheses:
“IW decreases the number of crashes, near crashes and incidents”
“LDW decreases lateral incidents, near crashes and accidents”
“Using FCW, the number of forward crashes, near crashes and
incidents will decrease”
„ACC decreases the number of forward incidents“
• Hypotheses do not consider combination of function and relevant
driving situations
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Incident definition
Interaction• Mainly four sub-projects involved:
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SP1: Management
SP5: Coordination of
VMCs
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Incident definition
Challenges• Hypotheses are too general and not related to specific driving
situations
• Differences between VMCs in data acquisition systems and
sensors
German1-VMC: only CAN data available
Swedish-VMC: CAN-data + Video + Eye tracking systems
• Interactions with other sub-projects (SPs)
input from different sub-projects needed
• Evaluation of additional information from external sensors
time consuming
14.12.20099 ICTCT 22.Workshop, Leeds
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Incident definition
“Incident”• In euroFOT an incident is a specific event, which is defined as:
“something that happens in a specific period of time which is
individuated combining (pre-processed) measures according to
predefined rules. A sub-event is a specific sub-set of an event”
• According to definition in euroFOT, an incident is defined as:
“an occurrence that could have resulted in a crash or near crash,
if the circumstances would have been more adverse”
• Examples for incident:
ESP intervention,
ABS intervention,
driver distraction,
unintentional lane or road departure
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Incident definition
Methodology
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Event Incident
Scenario
Incident in day light in high
traffic density on a motorway…
Weather(e. g., rain)
Traffic(e. g., high density)
Lighting(e. g., day light)
Road type(e. g., motorway)
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Necessary Sensors
CAN
Video
GPS
Eye-tracking system
Function Groups
Longitudinal systems
Lateral systems
Safe-HMI
FEA
Approach in euroFOT
Sensors and function groups
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• Definition considers:
available sensors
functions to be tested
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Approach in euroFOT
Template
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Author(s):
Necessary Sensors
CAN
Video
Function Group
Longitudinal Systems
Lateral Systems
SafeHMI
FEA
Description in words
Drawing of how the event “looks like” (optional)
click here to insert picture
Exclusions
Necessary and optional measures
CA
N
Vid
eo
ext
ra s
enso
r
CA
N
Vid
eo
ext
ra s
enso
r
1. necessary measure
5. optional measure
2. necessary measure
6. optional measure
3. necessary measure
7. optional measure
4. necessary measure
8. optional measure
Algorithm/Equation (alternative suggestions should be described under “general comments”)
Start of Event
whichever comes first
End of Event
whichever comes first
Necessary conditions (what has to be fulfilled for the event to classify as such)
Typical conditions (not necessarily present, but can give an indication for the event)
Sub-events (optional, sub-events exist only for a sub-set of events)
Sub-event 1
start
whichever comes first
necessary condition(s)
end
whichever comes first
Sub-event 2
start
whichever comes first
necessary condition(s)
end
whichever comes first
Sub-event 3
start
whichever comes first
necessary condition(s)
end
whichever comes first
• Event template for definition of
incident has been used
• Definition is made according to
specifics of different VMCs in
euroFOT (e.g., available sensors,
experimental design etc.)
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Approach in euroFOT
Indicators• Main data source CAN measures from vehicles’ CAN bus
• Indicators are based on:
functional warnings
function activation/intervention
vehicle dynamics
driver reaction
• Additionally video and eye tracking systems are considered for
driver impairment and distraction
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Source: Opel
Source: vtmagazine
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Approach in euroFOT
Exclusions• Other incidents not related to functional warnings, vehicle
dynamics or driver reactions can hardly be detected by means of
CAN data
• Additional sensors needed for offering more insights on
surrounding as well as driver state, e.g.,
pedestrian/animal approaching
running over red-light
neglecting priority at crossing
driver distraction
• Evaluation of incidents from additional
sensor data require extensive
video analysis
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Current status
Progress• Incidents are partly defined and discussed within SP4
forwarded to other SPs
• Incident definition is still not completed, because:
prioritized indicators are defined, but final threshold for indicators and
measures are needed
discussion on incident approach in SP6 is ongoing, i.e., maybe
further requirements on incident
• Implementation of algorithms for event detection started
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Current status
Indicator brakingBraking manoeuvre:
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Indicator Criteria/ Measures
Hard deceleration Deceleration > x m/s2
Warning brake assist (BA)
ABS-intervention
Source: BOSCH
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Current status
Indicator lane/road departureUnintended lane or road departure:
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Indicator Criteria/ Measures
Tire outside marking Vehicle velocity > x m/s
Status LDW, lane marking
Steering angle
Turning indicator status
Curve radius > x m
Source: VOLVOSource: Media-VW
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Current status
Indicator critical following situationsCritical following distance:
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Indicator Criteria / Measures
Time headway < x s Vehicle velocity > x m/s
Time to collision < x s Distance forward vehicle
Relative velocity
Warning FCW
Source: Opel
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Current status
Other indicatorsOther indicators:
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Indicator Criteria/ Measures
ESP intervention Status ESP
Steering velocity > x ◦/s Steering angle
Warning Status function XXX
Driver state Drowsiness and distraction level > x
Definition of thresholds for indicators and measures needed
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Outlook
• Piloting (3 months):
Testing of FOT vehicles (sensors, actuators etc.)
Testing of data acquisition procedure (data acquisition system, data
upload, data pre-processing and storage)
Testing of analysis approach (is collected and pre-processed data
sufficient to test pre-defined hypotheses etc.)
• Ramp-up by beginning of January 2010
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