vehicles have many safety features… seatbelt and shoulder straps air-bags padded dashboards

Impaired and Distracted Impaired and Distracted Driving by South Dakota YouthDriving by South Dakota Youth

Lee AxdahlAccident Records Supervisor

South Dakota Office of Highway Safety

Vehicles have many safety features…Vehicles have many safety features…

Seatbelt and shoulder strapsAir-bagsPadded dashboardsSafety glassAnti-locking brakes, andCollapsible steering columns …but…

Recent years have seen new driving Recent years have seen new driving challenges…challenges…

Increased traffic congestion on our roads … Many new technologies are now available for

use in automobiles … One technology particularly surrounded by

debate is the cell phone (and MP3 players) …

Generally Accepted Distracted Generally Accepted Distracted Driving Realities…Driving Realities…

Multitasking results in multiple tasks competing for a driver’s attentional resources …and…

Multitasking while driving results in less efficient visual search, slower reaction times, and fewer and shorter eye fixations.

George Mason University Study

In Other Words…In Other Words…

Add this to the list and trouble is Add this to the list and trouble is bound to be around the corner….bound to be around the corner….

Is That The Only Problem?Is That The Only Problem?

• Another factor is the inability of most young drivers to adequately assess and respond to risk. Why?

• The frontal brain lobe is responsible for cognitive functions that control life-saving behavior such as hazard anticipation and risk management. And?

• Brain imaging studies show this lobe does not fully develop until drivers are 25.

Or as Homer Simpson would say: “Doh!”

A South Dakota Example…A South Dakota Example…

CRASH REPORT NARRATION:

• …the driver lost control of the vehicle, entered the east ditch, crossed the fence line and then rolled multiple times. The driver, who was deceased at the scene, was located outside the vehicle. The crash is believed to have occurred numerous hours before discovery.

• The driver was last seen at approximately 10:30 PM the night before….

• 609124 – 16 Year Old Male

Fact:Fact:

• Inexperience behind the wheel is the leading cause of teenage crashes…

NHTSA

South Dakota Example #2…South Dakota Example #2…


• …the right rear tire blew out and the driver lost control. Vehicle began to slide sideways crossing the oncoming lane of traffic and entering the north ditch rolling two times.

• Back seat passenger was ejected out the back window sustaining fatal injuries…


Fact:Fact:

• Approximately two thirds of teens killed in automobile crashes are not wearing seatbelts.

NHTSA



• …Vehicle was traveling at a high rate of speed attempting to jump the vehicle on a drainage dip in the roadway. Vehicle hit the dip and became airborne. The driver lost control and swerved to miss a vehicle at the stop sign.

• …vehicle struck a tree and came to rest on its roof…driver was partially ejected and died at the scene…

• 614245 - 16 Year Old Male

Fact:Fact:

• 16 Year Olds have higher crash rates than drivers of any other age.

NHTSA



• Vehicle traveling in excess of posted speed limit and over steered the curve causing vehicle to skid and then roll three times along the drainage ditch…vehicle then struck the bottom of the drainage ditch…

• …driver was ejected from the vehicle and found approximately 80 feet from the roadway…


Fact:Fact:

• Motor vehicle crashes are the leading cause of death for teenagers.

NHTSA



• …driver drifted off the road into the west ditch for an unknown reason. As unit entered the ditch it collided with a delineator post. After the collision with the post, the driver of the vehicle attempted to bring the unit back onto the roadway and overcorrected, causing her to lose control and roll three times, ejecting both occupants…

709398 – 16 Year Old Female Killed

17 Year Old Male Killed

Fact:Fact:

• Statistics conclude that 16 & 17 year old driver death rates increase with each additional passenger.

Insurance Institute for Highway Safety

South Dakota Teenagers:South Dakota Teenagers:Safety Equipment Usage By Drivers Killed

Or Injured In Motor Vehicle Crashes

237

64

229

55

214

59

193

47

0

50

100

150

200

250

2004 2005 2006 2007

No Restraints Unknown Use

South Dakota Teenagers:South Dakota Teenagers:Is The “No Drinking & Driving Lesson”

Being Learned?

Teen Occupants Killed In Alcohol-Involved Motor Vehicle Crashes

0

5

10

15

20

25

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007

South Dakota Teenagers:South Dakota Teenagers:Not bad…the last three years are below the 13 year fatality average!

Teen Occupants Killed In Alcohol-Involved Motor Vehicle Crashes

0

5

10

15

20

25

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007

South Dakota Teenagers:South Dakota Teenagers:But … But … it’s still “them” versus “us” and the

picture isn’t encouraging!

Percent Teen South Dakota Licensed Drivers versus Total Licensed Drivers

9.3 9 8.7 8.5 8.4 8.2

15.6 16.3 15.5 13.1 15 14.5

32.6 34.830.6 32.3

29.4 28.3

0

10

20

30

40

2001 2002 2003 2004 2005 2006

% of Licensed Drivers % of Drinking Drivers F&I % of Speeding Drivers F&I

South Dakota Teenagers:South Dakota Teenagers:And the year to year averages are not

in drastic flux … lessons being learned?

Percent Teen South Dakota Licensed Drivers versus Total Licensed Drivers

9.3 9 8.7 8.5 8.4 8.2

15.6 16.3 15.5 13.1 15 14.5

32.6 34.830.6 32.3

29.4 28.3

0

10

20

30

40

2001 2002 2003 2004 2005 2006

% of Licensed Drivers % of Drinking Drivers F&I % of Speeding Drivers F&I

31.3

15.08.7

You Think That’s Bad?You Think That’s Bad?

• Don’t even ask about teenagers on motorcycles!

South Dakota Teenagers:South Dakota Teenagers:Percent Motorcycle Licenses versus

Percent Fatal & Injury Motorcycle Crashes

Teenage South Dakota Licensed Motorcycle Drivers

1.6 1.7 1.6 1.7 1.6 1.5

13.6

8.8 9

14.416.3

11.8

2001 2002 2003 2004 2005 2006

South Dakota Teenagers:South Dakota Teenagers:Doing their best to stay average!

Teenage South Dakota Licensed Motorcycle Drivers

1.6 1.7 1.6 1.7 1.6 1.5

13.6

8.8 9

14.416.3

11.8

2001 2002 2003 2004 2005 2006

12.3

Recarte & Nunes ResearchRecarte & Nunes Research

• Published in March, 2000 by the American Psychological Association

• Recorded the eye movements of drivers while they performed verbal and spatial-visual tasks

• Also measured how often each driver checked his or her side and rear mirrors and the speedometer

Findings…Findings…

• During visual-verbal tasks unrelated to driving, the driver fixated on certain points longer and glanced less frequently at his/her mirrors and dashboard instruments

• During visual-verbal tasks, “the driver’s eye freezes up and the visual inspection window decreases, affecting peripheral vision and perception of the environment”


When cognitively complex tasks are performed while driving, the “visual inspection window” decreases between 25-40% horizontally, and 40-60% vertically.

Technical term for the phenomena…

…TUNNEL VISION


• Therefore, the study finds, that the potential of using a cell phone is one thing (visual task)…add an in-depth conversation requiring considerable mental effort (verbal task) and an already risky behavior is compounded

2002 George Mason University Distracted Driving Study:

• Examine the nature and scope of the distracted driving issue

• To identify and develop strategies that might help minimize distracted driving

George Mason University Study

RESEARCH FINDINGS:

The extent of the distracted driving problem is not clearly defined, validated, or

determined and terminology is inconsistent

It is not clear how specific behaviors affect driving capacities differently in

magnitude or effect

South Dakota Teen DriverSouth Dakota Teen DriverContributing Factors To Crashes

0

2 0

4 0

6 0

8 0

1 0 0

1 2 0

1 4 0

2 0 0 4 2 0 0 5 2 0 0 6 2 0 0 7

C e ll P h o n e U s a g e D rin k in g


0

100

200

300

400

500

600

2004 2005 2006 2007

Cell Phone Usage DrinkingDrugs - Med & Other Speed Too Fast For ConditionsExceeded Posted Speed


0

100

200

300

400

500

600

2004 2005 2006 2007

Cell Phone Usage DrinkingDrugs - Med & Other Speed Too Fast For ConditionsExceeded Posted Speed Distracted

South Dakota Tasks?South Dakota Tasks?

• Define “distracted driving” for consistency• As it applies to all drivers?• As it applies to SDCL?• As it applies to enforcement?

• Categorize “distracted driving” incidents to validate extent of problem

• Cell Phone related?• MP3, etc… related?• Traffic related?

South Dakota Tasks?South Dakota Tasks?

• Determine methods to educate drivers• Remedial education for existing drivers?• Inclusion in Driver’s Education program?• Major media reinforcement

• Legislative or Policy• Proposed legislation should be supported by

current research• The fact that “Distracted Driving” is not an offense

inhibits the ability for enforcement to “cite”

vehicles have many safety features… seatbelt and shoulder straps air-bags padded dashboards

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