Nicole J. Hollopeter M.S. Thesis Defense...

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Nicole J. Hollopeter M.S. Thesis Defense Presentation

Transcript of Nicole J. Hollopeter M.S. Thesis Defense...

Page 1: Nicole J. Hollopeter M.S. Thesis Defense Presentationhomepage.divms.uiowa.edu/~rdecook/stat5201/notes/5... · 36 Participants% Young%Novice% (N=18) Male (N=9) Left%Departure% Right%Departure%

Nicole J. Hollopeter M.S. Thesis Defense Presentation

Page 2: Nicole J. Hollopeter M.S. Thesis Defense Presentationhomepage.divms.uiowa.edu/~rdecook/stat5201/notes/5... · 36 Participants% Young%Novice% (N=18) Male (N=9) Left%Departure% Right%Departure%

This  project  was  funded  by  the  National  Highway  Traffic  Safety  Administration  and  conducted  at  The  National  Advanced  Driving  Simulator.  

 

Thank  you  to  the  many  individuals  in  the  University  of  Iowa  College  of  Engineering  and  at  the  National  Advanced  Driving  Simulator  who  supported,  assisted,  and  collaborated  

with  me  on  this  project.  

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36  Participants  

Young  Novice  (N=18)  

Male  

(N=9)  

Left  Departure  Right  Departure  Curve  Departure  

 

Female  

(N=9)  

Left  Departure  Right  Departure  Curve  Departure  

 

Experienced  

(N=18)  

Male  

(N=9)  

Left  Departure  Right  Departure  Curve  Departure  

 

Female  

(N=9)  

Left  Departure  Right  Departure  Curve  Departure  

 

Factorial  Design  Lane  Departure    Warning  System  

   

!  Provides  a  warning  as  driver  departs  lane  boundary  

!  Strong  steering  torque  in  direction  necessary  for  return  to  appropriate  lane  (6  Nm)  

!  Minimum  speed  threshold  of  35  mph  

   

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!  The  complete  block  Split-­‐Plot  design  !  Factors:  Experience  (teen/adult),                                            

 Treatment  (BL/BR/BC)  !  Potential  Response  Variables:    

1.  PeakSteerRate 2.  PeakSteerJerk 3.  StrReverse 4.  InitSR 5.  DurationOfExceedance 6.  ttSR

7.  SDLP 8.  DeltaV 9.  AreaOfExceedance 10.  MaxOfExceedance 11.  ttAR 12.  RunOffRoad

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!  High  Fidelity  Simulator  !  400  square  meters  of  horizontal  and  longitudinal  

travel  !  ±330  degrees  of  rotation  !  8  projectors,  360°  of  scenery  &  environment  !  Vehicle  state  and  driver  inputs,  sampled  at  240  Hz  

NADS-1 Dome in Bay

NADS-2 with Freightliner Heavy Truck Cab

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Primary  Distraction:  Bug  Catch    

Secondary  Distractions:  CD  Player  &  Trivia  Game    

 3  Experimentally  planned  departures  !  Drift  off  road  to  right  

!  Drift  over  centerline  with  incoming  traffic  

!  Fail  to  keep  lane  in  left  curve  entry    (i.e.  right  departure  in  left  curve)  

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Removing  Events  in  which  Warning  is  not  Leading  Indication  of  Departure:  !  Drift  abort    !  Local  lateral  speed  at  departure  !  Video  review    

Dealing  with  Events  in  which  Driver  Departs  Opposite  the  Intended  Direction:  !  Straight  Events  

!   Remove  event  if  departed  opposite  intended  direction    

!  Curve  Event  !  19/36  departed  opposite  intended  direction  

 Of  the  108  data  points,    28  were  removed  from  analysis  due  to  warning  not  being  initial  indicator  or  opposite  departures.        

 

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Trt  

Teen  Drivers  

1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16   17   18  

Bugle4                   X               X               X               X      

Bugright               X                                                       X  

Bugcurve                           X           X               X   X       X      

Trt  

Adult  Drivers  

19   20   21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36  

Bugle4                   X               X   X               X                  

Bugright           X                           X                           X   X  

Bugcurve   X                   X       X   X       X   X           X       X   X  

X  means  missing.  

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 •  Data  were  assumed  to  be  missing  at  random  (complete  blocks  kept)  •  The  subsetted  data  resulted  in  a  complete-­‐block  Split-­‐Plot  design    

Trt  

Teen  Drivers  

1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16   17   18  

Bugle4                   X               X               X               X      

Bugright               X                                                       X  

Bugcurve                           X           X               X   X       X      

Trt  

Adult  Drivers  

19   20   21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36  

Bugle4                   X               X   X               X                  

Bugright           X                           X                           X   X  

Bugcurve   X                   X       X   X       X   X           X       X   X  

X  means  missing.