driver metrics workshop: interactive tool for assessing visual demand
DESCRIPTION
http://ppc.uiowa.edu/drivermetricsworkshop. Driver Metrics Workshop: Interactive Tool For Assessing Visual Demand. - PowerPoint PPT PresentationTRANSCRIPT
V. 2007-May-04
Driver Metrics Workshop:Interactive Tool For Assessing Visual Demand
Begin ►
To start, select the “Begin” button below and answer the questions on the following pages. Your answers will allow this assessment tool to determine which metric is most appropriate
for your study relating to visual demand.
Notes:1. All metrics discriminate between the task and “just
driving.”
2. Additional surrogate methods/measures will be folded into the tree, as time allows.
Background Data & Organization of Metrics for Interactive Tool Linda Angell, GMJohn Lee, University of IowaDan McGehee, University of IowaMick Rakauskas, University of MinnesotaAttendees at the Driver Metrics Workshop, Ontario, 2006, sponsored by the Alliance of Automobile Manufacturers
Tool Structure & Design: Mick Rakauskas, University of Minnesota
http://ppc.uiowa.edu/drivermetricsworkshophttp://ppc.uiowa.edu/drivermetricsworkshop
V. 2007-May-04
Effects on Driving Performance
What specific effects on driving performance are you interested in assessing?
Event DetectionOnly
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Event Detection
&
Lane Keeping /Lateral Control
&
Speed Keeping /Longitudinal Control
&
Glance Behavior
Event Detection
&
Lane Keeping / Lateral Control
Lane Keeping /Lateral Control
&
Speed Keeping /Longitudinal Control
&
Glance Behavior
V. 2007-May-04
NoYes
Are you concerned about being able to repeat your results in future testing?
Repeatability
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V. 2007-May-04
NoYes
Are you concerned about being able to repeat your results in future testing?
Repeatability
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V. 2007-May-04
NoYes
Are you concerned about being able to repeat your results in future testing?
Repeatability
Restart
V. 2007-May-04
NoYes
Are you concerned about being able to repeat your results in future testing?
Repeatability
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V. 2007-May-04
Of these choices, what is the minimum amount of validation you expect your measures to have?
Limited empirical data, or multiple studies that may not all agree
It is unimportant that measures have been validated in the past.
Multiple peer reviewed (published) studies, data are highly valid & consistent
It is very important that measures have been validated in the past.
Multiple studies with cross validation, data are highly valid & consistent
It is important that measures have been validated in the past.
More than one study with some consistency, data have validity & applicability
It is somewhat important that measures have been validated in the past.
Empirical Foundations
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V. 2007-May-04
Of these choices, what is the minimum amount of validation you expect your measures to have?
Limited empirical data, or multiple studies that may not all agree
It is unimportant that measures have been validated in the past.
Multiple peer reviewed (published) studies, data are highly valid & consistent
It is very important that measures have been validated in the past.
Multiple studies with cross validation, data are highly valid & consistent
It is important that measures have been validated in the past.
More than one study with some consistency, data have validity & applicability
It is somewhat important that measures have been validated in the past.
Empirical Foundations
Restart
V. 2007-May-04
Of these choices, what is the minimum amount of validation you expect your measures to have?
Limited empirical data, or multiple studies that may not all agree
It is unimportant that measures have been validated in the past.
Multiple peer reviewed (published) studies, data are highly valid & consistent
It is very important that measures have been validated in the past.
Multiple studies with cross validation, data are highly valid & consistent
It is important that measures have been validated in the past.
More than one study with some consistency, data have validity & applicability
It is somewhat important that measures have been validated in the past.
Restart
Empirical Foundations
V. 2007-May-04
Of these choices, what is the minimum amount of validation you expect your measures to have?
Limited empirical data, or multiple studies that may not all agree
It is unimportant that measures have been validated in the past.
Multiple peer reviewed (published) studies, data are highly valid & consistent
It is very important that measures have been validated in the past.
Multiple studies with cross validation, data are highly valid & consistent
It is important that measures have been validated in the past.
More than one study with some consistency, data have validity & applicability
It is somewhat important that measures have been validated in the past.
Empirical Foundations
Restart
V. 2007-May-04
Of these choices, what is the minimum amount of validation you expect your measures to have?
Limited empirical data, or multiple studies that may not all agree
It is unimportant that measures have been validated in the past.
Multiple peer reviewed (published) studies, data are highly valid & consistent
It is very important that measures have been validated in the past.
Multiple studies with cross validation, data are highly valid & consistent
It is important that measures have been validated in the past.
More than one study with some consistency, data have validity & applicability
It is somewhat important that measures have been validated in the past.
Empirical Foundations
Restart
V. 2007-May-04
Of these choices, what is the minimum amount of validation you expect your measures to have?
Limited empirical data, or multiple studies that may not all agree
It is unimportant that measures have been validated in the past.
Multiple peer reviewed (published) studies, data are highly valid & consistent
It is very important that measures have been validated in the past.
Multiple studies with cross validation, data are highly valid & consistent
It is important that measures have been validated in the past.
More than one study with some consistency, data have validity & applicability
It is somewhat important that measures have been validated in the past.
Empirical Foundations
Restart
V. 2007-May-04Exit ►
Recommended Metrics
Restart
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Test Method and Metrics Recommended CriteriaR2 predictive power
Event Detection
Sternberg Test
Missed detections Not yet developed 0.59-0.94
Errors (count or percent) Not yet developed 0.65-0.94
(Other) Combined Decrement Score Not yet developed 0.64-0.84
V. 2007-May-04Exit ►
Recommended Metrics
Restart
Click the metric name for a description, lists of references, & organizations with experience.
Note: These Metrics are weakly supported by your choices.
Test Method and Metrics Recommended CriteriaR2 predictive power
Event Detection
Visual Occlusion
R TBD; proposed < 1 0.16-0.48
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion 0.62-0.92
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown
Lane Change Initiation (event detection) TBD; compare mean to baseline, reference task, or criterion unknown
Total (sum) delay in initiation TBD; compare mean to baseline, reference task, or criterion unknown
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.22-0.36
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.17-0.66
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.18-0.66
Duration See Alliance protocol and JAMA Guidelines 0.28-0.53
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Note: These Metrics are weakly supported by your choices.
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Event Detection
Visual Occlusion
R TBD; proposed < 1 0.16-0.48
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion 0.62-0.92
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.22-0.36
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Note: These Metrics are weakly supported by your choices.
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Event Detection
Visual Occlusion
R TBD; proposed < 1 0.16-0.48
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Event Detection
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion 0.62-0.92
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown
Lane Change Initiation (event detection) TBD; compare mean to baseline, reference task, or criterion unknown
Total (sum) delay in initiation TBD; compare mean to baseline, reference task, or criterion unknown
Sternberg Test
Missed detections Not yet developed 0.59-0.94
Errors (count or percent) Not yet developed 0.65-0.94
(Other) Combined Decrement Score Not yet developed 0.64-0.84
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Event Detection
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion 0.62-0.92
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Lateral Control/ Lane
Event Detection
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.83 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.90 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.69 0.22-0.36
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.96 0.17-0.66
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 0.18-0.66
Duration See Alliance protocol and JAMA Guidelines 0.74 0.28-0.53
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Lateral Control/ Lane
Event Detection
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion 0.52 0.62-0.92
Adaptive Mdev TBD; compare mean to baseline, reference task, or criterion unknown unknown
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown unknown
Mean task completion time (or distance) TBD; compare mean to baseline, reference task, or criterion unknown unknown
Sdev Lpos TBD; compare mean to baseline, reference task, or criterion unknown unknown
Mean area of deviation per task TBD; compare mean to baseline, reference task, or criterion unknown unknown
Lane Change Initiation (event detection) TBD; compare mean to baseline, reference task, or criterion unknown unknown
Total (sum) delay in initiation TBD; compare mean to baseline, reference task, or criterion unknown unknown
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.83 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.90 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.69 0.22-0.36
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.96 0.17-0.66
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 0.18-0.66
Duration See Alliance protocol and JAMA Guidelines 0.74 0.28-0.53
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Lateral Control/ Lane
Event Detection
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.83 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.90 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.69 0.22-0.36
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.96 0.17-0.66
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 0.18-0.66
Duration See Alliance protocol and JAMA Guidelines 0.74 0.28-0.53
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Lateral Control/ Lane
Event Detection
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion 0.52 0.62-0.92
Adaptive Mdev TBD; compare mean to baseline, reference task, or criterion unknown unknown
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown unknown
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.83 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.90 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.69 0.22-0.36
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.96 0.17-0.66
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 0.18-0.66
Duration See Alliance protocol and JAMA Guidelines 0.74 0.28-0.53
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Note: These Metrics are weakly supported by your choices.
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Lateral Control/ Lane
Event Detection
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion 0.52 0.62-0.92
Adaptive Mdev TBD; compare mean to baseline, reference task, or criterion unknown unknown
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown unknown
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.83 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.90 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.69 0.22-0.36
V. 2007-May-04Exit ►
Recommended Metrics
There were no Metrics supported by your choices.
Please try again by clicking the restart button below.
Restart
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Longitudinal Control/ Speed
Lateral Control/ Lane
Visual Occlusion
TSOT15 secs (Alliance, v2.1); 7.5 secs (JAMA)20 sec (SAE J-2364; 85th percentile)
0.90 0.54
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.86 (Speed Dev)
0.83
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 (Speed Dev)
0.90
Duration See Alliance protocol and JAMA Guidelines 0.64 (Speed Dev)
0.69
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.96 (Speed Dev)
0.96
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 (Speed Dev)
0.96
Duration See Alliance protocol and JAMA Guidelines 0.69 (Speed Dev)
0.74
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Longitudinal Control/ Speed
Lateral Control/ Lane
Visual Occlusion
TSOT15 secs (Alliance, v2.1); 7.5 secs (JAMA)20 sec (SAE J-2364; 85th percentile)
0.90 0.54
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended CriteriaR2 predictive power
Longitudinal Control/ Speed
Lateral Control/ Lane
Visual Occlusion
TSOT15 secs (Alliance, v2.1); 7.5 secs (JAMA)20 sec (SAE J-2364; 85th percentile)
0.90 0.54
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Restart
Test Method and Metrics Recommended Criteria
R2 predictive power
Longitudinal Control/ Speed
Lateral Control/ Lane
Event Detection
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.96 (Speed Dev)
0.96 0.17-0.66
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 (Speed Dev)
0.96 0.18-0.66
Duration See Alliance protocol and JAMA Guidelines 0.69 (Speed Dev)
0.74 0.28-0.53
V. 2007-May-04
Click the metric name for a description, lists of references, & organizations with experience.
Throughout the document, R2 color coding is as follows:
Green > 0.750.75 > Orange > 0.500.50 > Yellow > 0.75
Exit ►
Recommended Metrics
Note: These Metrics are weakly supported by your choices.
Restart
Test Method and Metrics Recommended Criteria
R2 predictive power
Longitudinal Control/ Speed
Lateral Control/ Lane
Event Detection
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.86 (Speed Dev)
0.83 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 (Speed Dev)
0.90 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.64 (Speed Dev)
0.69 0.22-0.36
Rate 2 secs (Alliance, v 2.1) unknown unknown unknown
V. 2007-May-04Exit ►
Recommended Metrics
There were no Metrics supported by your choices.
Please try again by clicking the restart button below.
Restart
V. 2007-May-04
Test Method and Metrics Recommended Criteria
R2 predictive
power
R2 predictive
power
R2 predictive
power
Long'l Ctrl / Speed
Lateral Control/ Lane
Event Detection
Visual Occlusion
TSOT15 secs (Alliance, v2.1); 7.5 secs (JAMA)20 sec (SAE J-2364; 85th percentile)
0.90 0.54 unknown
R TBD; proposed < 1 unknown unknown 0.16-0.48
Lane Change Test (LCT)
Mdev TBD; compare mean to baseline, reference task, or criterion unknown 0.52 0.62-0.92
Adaptive Mdev TBD; compare mean to baseline, reference task, or criterion unknown unknown unknown
Sign Perception (missed lane changes) TBD; fail=misses > 0 or criterion value unknown unknown unknown
Reaction Time TBD; compare mean to baseline, reference task, or criterion unknown unknown unknown
Mean task completion time (or distance) TBD; compare mean to baseline, reference task, or criterion unknown unknown unknown
Sdev Lpos TBD; compare mean to baseline, reference task, or criterion unknown unknown unknown
Mean area of deviation per task TBD; compare mean to baseline, reference task, or criterion unknown unknown unknown
Lane Change Initiation (event detection) TBD; compare mean to baseline, reference task, or criterion unknown unknown unknown
Total (sum) delay in initiation TBD; compare mean to baseline, reference task, or criterion unknown unknown unknown
Glances Measured in Static Divided Attention Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.86 (Speed Dev)
0.83 0.14-0.48
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 (Speed Dev)
0.90 0.17-0.46
Duration See Alliance protocol and JAMA Guidelines 0.64 (Speed Dev)
0.69 0.22-0.36
Rate 2 secs (Alliance, v 2.1) unknown unknown unknown
Glances Measured in Dynamic Driving Test including PDT
Number TBD; see Alliance protocol and JAMA Guidelines 0.96 (Speed Dev)
0.96 0.17-0.66
T-G-T (E-O-R-T) 20 secs (Alliance, v 2.1) 0.96 (Speed Dev)
0.96 0.18-0.66
Duration See Alliance protocol and JAMA Guidelines 0.69 (Speed Dev)
0.74 0.28-0.53
Rate 2 seconds (Alliance, v. 2.1) unknown unknown unknown
Peripheral Detection Task (PDT) alone
PDTA miss rate Not yet developed unknown unknown unknown
PDTA Mean RT Not yet developed unknown unknown unknown
Sternberg Test
Missed detections Not yet developed unknown unknown 0.59-0.94
Errors (count or percent) Not yet developed unknown unknown 0.65-0.94
(other) Combined Decrement Score Not yet developed unknown unknown 0.64-0.84
Response Times Not yet developed unknown unknown unknown
Click the metric name for a description, lists of references, & organizations with experience.
Exit ►
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V. 2007-May-04
Visual Occlusion
References (peer reviewed)
Noy, Lemoine & Klachan (2002)
z.B. Schutte & Trujillo (1996)
Madhavan & Funk (1996)
Pattipati et al (1983)
Adams, Tenney & Pew (1995)
Mc Farlane & Latorella (2002)
Miyata & Norman (1986)
z.B. Krems et al (2001)
Franke, Daniels & Mc Farlane (2002)
Noy & Lemoine (2001)
Noy et al (2004)
Special issue of Applied Ergonomics (2003)
Special issue of HF (2002)
(non-peer reviewed)
Driver Focus-Telematics Working Group (2002)
Occlusion Metrics (ISO/CD 16673)
(cf. proposal 3.3 (2003) & 2.1A & SAE J2364, ISO 16673)
See operational definitions for task, subtask, and dependant task:alliance guidelines v2.1, June 2006 update
Description The occlusion procedure simulates visual demand in order to measure
the “resumability” after a visual distraction. The longer someone is visually distracted (i.e. is keeping their eyes off the road), the greater the crash risk. The occlusion method is accomplished by blocking the participant’s view of the relevant driving scene area or cockpit areas either physically (e.g. occlusion goggles, partition) or by simulating a partition in a simulated environment for a relevant occlusion interval.
Measures (abbreviations) Total Shutter Open Time (TSOT) - total time that vision is not
occluded with an occlusion procedure (ISO/DIS 16673.2) Total Task Time (TTTUnoccl) - total time that gaze is fixed upon a
target area (ISO/DIS 16673.2) Resumability ratio (R) - determined as the total time that vision is
not occluded with an occlusion procedure (TSOT) to the total static task time (TTTUnoccl). (ISO/DIS 16673.2)
Organizations with Experience
CUT, BASt, TRL
BMW
HASTE (groups involved w/)
Transport Canada
JAMA
JARI
LAB (PSA, Renault)
DRI
Toyota, Ford, Nissan, GM (CAMP)
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V. 2007-May-04
Lane Change Test
Description
The lane change test is a simple laboratory “…dual-task method that quantitatively measures performance degradation on a primary driving-like task due to distraction while a secondary task (e.g. operating an in-vehicle system) is being performed” (ISO TC 22/SC 13/WG 8). During a test run, participants steer a simulated vehicle between three lanes as directed by signs on the side of the road placed at constant distances. Participants complete the primary task of driving while also completing a secondary task or an established criterion task, with established levels of performance (e.g. tuning a radio).
Measures (abbreviations)- [if alternative measure, proposed by]• Mean Deviation (Mdev) - average deviation from normative model
is the total area between the normative model and driving course (m2) divided by distance driven (m)
• Adaptive Mdev – Mean deviation adjusted on a per-individual basis [Tattegrain Veste, INRETS]
• Missed lane changes - count of lane changes missed [Burns, Transport Canada]
• Mean task completion time (or distance) - average time(s) it takes to complete a single task while driving the LCT [Burns, Transport Canada]
• Standard Deviation of lane position (Sdev Lpos)• Mean area of deviation per task - average area between the
normative model and driving course (m2) for a single task [Burns, Transport Canada]
• Lane change initiation (LCI; event detection) - time from when sign appears until initial change from current lane position [Burns, Transport Canada]
• Total (sum) delay in initiation by task - the mean sum of the delays in LCI for a single task (m) [Burns, Transport Canada]
References (non-peer reviewed)
Mattes (2003)
Markkula, Engstrom (in prep)
Burns et al (2005)
CAMP Driver WL Metrics Project (2005)
Organizations with Experience
Daimler Chrysler (& many more)
JARI
VTI (Swedish national Transport Research Institute) collaborating on HASTE & AIDE projects
USDOT, GM, Ford, Toyota, Nissan (CAMP driver WL Metrics project)
Honda
Transport Canada
Volvo
INRETS
LAB
BMW
DRI
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V. 2007-May-04
Glances Measured in Static or Dynamic Divided Attention Test, Including PDT
References (peer reviewed)
Bowyer, Moran, Hsieh, Manhoran, Young, et al (2006)
Corbetta (1998)
Engstrom, Johansson, Ostlund (2005)
HASTE special issue (all papers from WP2 studies)
Victor, Harbluk, Engstrom (2005)
Young & Angell (2003)
(non-peer reviewed)
Johnsson, Engstrom, et al (2004)
Johansson, Kronberg, et al (2006)
Kronberg, Victor, Engstrom (2006)
Larsson (2002)
Markkula, Engstrom (in press)
Ostlund, Peters, et al (2005)
Victgor (2005)
CAMP Driver WL Metrics Project (2005)
Organizations with Experience
HASTE & AIDE projects
USDOT, GM, Ford, Toyota, Nissan (CAMP driver WL Metrics project)
VTTI (Virginia Tech Transportation Institute)
University of Iowa
… and many more
Description
Direct measures assess how drivers respond to vehicle and equipment design, the road environment, or other driver related tasks in both real and simulated road conditions. Behavior is quantified relative to reference task(s) through response & performance measures and gaze metrics (and by inference, attention processes).
Measures (abbreviations)• Number of glances - count of glances that are aimed at a target
object or area• Total Glance Time (T-G-T) - time(s) that gaze is attending to a
target object or area (aka “Eyes Off Road Time (E-O-R-T)”)• Glance Duration - length of time (s) that a glance remains on a
target object or area• Rate - percent of glance duration spent on a target (task) object or
area• Use with a driving methodology yields driving performance data,
e.g. Lane position variation Lane exceedance counts Speed variability Object or event reaction times
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V. 2007-May-04
Sternberg Test
Description
The Sternberg test requires individuals to memorize a short list of numbers. Numbers are then presented (visually, aurally), and the participant must answer "yes" or "no" depending on whether each is a member of the memorized set.
References
To be supplied
Organizations with Experience
GM
Others to be supplied
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