Women Drivers Are a Serious Health Risk For Men

33,696 men drivers and 20,156 women drivers were involved in the traffic fatalities of 41,967 American citizens in 1997.

28,538 of these fatalities were men.

Being a woman driver increases the probability of an injury or fatal accident by between 33% and 56%.

At worst, a man who drinks and drives increases his probability of an injury or fatal accident by 4%.

Traffic accidents would decrease between 15% to 22% if only men drove, saving up to 9,159 lives per year and up to 330,000 lives over the next 30 years.

Crash repair costs would be between $30 to 44 billion/year lower.

Between 4,823 to 6,266 additional men die in traffic accidents each year because of the dramatic differences between men and women in hand/eye coordination.

There would be between 12,053 to 23,879 more traffic fatalities/year if only women drove, which means that safer men drivers save between 4,248 to 7,674 women's lives each year.

Consistent with women drivers, women pilots have a crash rate four times higher than men pilots.

 

Various reports from the Department of Transportation show that women drive between 30% and 35% of the 1,478 billion miles traveled by passenger cars in the US.  This means that women drivers are between 33% and 56% more likely than men per mile driven to have an accident.

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The higher probability that women will have an automobile accident contributes to an increase in the accident rate for men.  The calculations for the most conservative figure of 35% are shown below to enable a comparison to be made to the results of the 56% figure.  To determine exactly how much higher the accident rate for men is because of women drivers it is necessary to calculate the rate per one million miles that both men and women are expected to have an accident.  If we let Nm be the number of accidents per million miles that a man is expected have a single driver auto accident, and Nf that a woman will, then we have two equations and two variables.  The total number of accidents per million miles that a man is expected to have an accident, Rm, is the sum of his likelihood per million miles of having a single driver accident Nm, the square of this probability to represent a two driver accident involving another man Nm2, and Nm  times Nf  to represent a two driver accident involving a woman.  For simplicity, accidents involving more than two drivers are omitted, but they are rare enough that the ratios below won't change significantly and it is unlikely that the probability of either sex to have a multiple car crash is much different than the probability of a two driver crash:

(Nm +  .65Nm2  +.35 NmNf) x 965 billion miles driven = 2,418,799 accidents

Rm = Nm +  .65Nm2  + .35NmNf = 2.5

The equation for women is similar:

(Nf +  .35Nf2  + .65NmNf) x 513 billion miles driven = 1,701,043 accidents

Rf = Nf +  Nf2  + NmNf = 3.3

Nf = (2.5 - Nm - .65Nm2)/.35Nm

(2.5 - Nm - .65Nm2)/.35Nm + 2.857(6.25 -5Nm - 2.25Nm2 + 1.3Nm3 + .4225Nm4 )/Nm2 + 1.857(2.5 -Nm - .65Nm2) = 3.3    

1.155Nm2  = 2.5Nm - Nm2 - .65Nm3 + 6.25 - 5Nm - 2.25Nm2 + 1.3Nm3 + .4225Nm4 + 1.6429Nm2 - .65Nm3 - .4225Nm4

2.7621Nm2  + 2.5Nm   = 6.25

Nm = 1.11829 = The number of single driver accidents per million miles that that a man is expected to have.

Nf = 1.4533 = The number of single driver accidents per million miles that that a woman is expected to have.

Nf = 1.3 x Nm

If all drivers were men who drove the 1,478 billion miles which are currently driven by both men and women, the total accident rate would be 2.37 accidents per million miles, for a total of 3,497,018 drivers in accidents:

(Nm + Nm2) x 1,478,000 million miles = 3,501,179 drivers in accidents.

If all drivers were women who drove the 1,478 billion miles which are currently driven by both men and women, the total accident rate would be 3.67 accidents per million miles, for a total of  5,417,947 drivers in accidents:

(Nf + Nf2) x 1,478,000 million miles =  5,269,840 drivers in accidents.

With the assumption that women drive 35% of all miles, if only men drove today, the number of drivers in accidents would decrease from 4,119,842 to 3,501,179 per year, a reduction of 16.9%.  If only women drove, the number of drivers in accidents would increase from 3,497,018 to 5,269,840 per year, a 28.7% increase and there would be 50% more accidents than if only men drove.  Women who have accidents with men increase men's overall accident rate per million miles from 2.37 to 2.51, a 5.5% increase.

 

 

Men

Women

Total

Miles Driven (billions)

965.134

513

1,478

Drivers in crashes per year

2,418,799

1,701,043

4,119,842

Current crash rate per million miles

2.51

3.32

1.32

Single driver crash rate per million miles

1.1164

1.485

1.33

Crash rate with one same sex driver

0.813865871

0.765213075

 

Crash rate with one opposite sex driver

0.575275338

1.082578662

 

Total crash rate with both sexes driving

2.505541209

3.332791737

1.33

Current total drivers in crashes

2,418,183

1,709,276

0.71

Crash rate with only one sex driving

2.36274896

3.690225

1.56

Drivers in crashes with only one sex driving all miles

3,492,143

5,454,153

1.56

 

At current traffic fatality rates, the average man who drives 15,000 miles per year for fifty years has a 1.91% probability of dying in a traffic crash.  But a non-drinking woman driving the same distance has a 5.63% probability of dying in a traffic crash, almost three times as high.  Because men are safer drivers per mile driven, if only men drove all of the miles currently driven by both men and women, his probability would decrease to 1.59%, which would save a quarter of a million lives over the next three decades.  Contrary to popular belief, the NHTSA data shows that the drinking man driver has a better traffic safety record than the non-drinking man driver, with a probability over 50 years of only 0.82%.  If only drinking men drove all the miles currently driven by both men and women, almost a million lives would be saved over the next 3 decades, compared to only 157,000 lives which would be expected to be saved by the use of seat belts over that time.

Conversely, if only women drove those same miles in that same timeframe, there would be almost half a million additional traffic fatalities.

 

Probability of death over 50 years

Men's Annual Mortality Rate

Men's Rate Over 50 Years

Women's Annual Mortality Rate

Women's  Rate Over 50 Years

Heart disease

0.003601

18.00%

0.003733

18.66%

If alcohol consumption were increased enough to reduce heart disease deaths 10%

0.00324

16.20%

0.00336

16.798%

Cancer

0.00282

14.09%

0.00257

12.868%

Firearms

0.00020

1.00%

0.00005

0.250%

Non-automobile accidents

0.00032

1.62%

0.00019

0.942%

AIDS

0.00025

1.26%

0.00005

0.253%

Sodomites

0.60665

3033.24%

1.09766

5488.320%

Pneumonia and flu

0.00038

1.90%

0.00046

2.287%

Suicide

0.00025

1.25%

0.00005

0.250%

Diabetes

0.00028

1.38%

0.00034

1.706%

Cirrhosis

0.00016

0.82%

0.00002

0.117%

Wife murdered by husband

   

0.0000037

0.018%

Woman murdered by other than husband

   

0.00003

0.170%

Child murdered by mother

0.0000107

0.0533%

0.00000710

0.036%

Child murdered by father

0.0000002

0.0011%

0.00000014

0.0007%

         

Auto accidents at 15,000 miles per year

       

Fatality rate per mile

0.0000000255

 

0.0000000338

 

Fatality rate per billion miles

25.53

 

33.78615323

 

Non-drinking driver

0.000710

3.55%

0.001126

5.63%

Current average rate

0.000383

1.91%

0.000507

2.53%

If only men drove

0.000318

1.59%

   

If eliminating drinking and driving would decrease fatal traffic accidents by 4%

0.000368

1.84%

0.000487

2.43%

If seat belts aren't worn

0.000423

2.11%

0.000559

2.80%

If only women drove

   

0.000493

2.46%

Average crash fatality rate of drinking man

0.000165

0.82%

   

If only drinking men drove

0.000137

0.68%

   

 

 

Percent Change

Men

Total

Men, 30 years

Total, 30 yrs

Difference, men, 30 years

Difference, total, 30 yrs

Current annual traffic fatalities

 

24,639

41,967

887,012

1,510,812

   

Fatalities if only men drove

16.93%

20,467

34,860

736,808

1,254,975

-150,205

-255,837

If only drinking men drove

64.27%

8,803

14,993

316,894

539,752

-570,119

-971,060

If only women drove

-28.72%

31,715

54,020

1,141,755

1,944,705

254,743

433,893

If only men drove without seat belts

-10.40%

27,202

46,332

979,262

1,667,936

92,249

157,124

If eliminating alcohol reduced accidents 4%

4.00%

23,654

40,288

851,532

1,450,380

-35,480

-60,432

If only non-drinking women drove

194.09%

72,461

123,421

2,608,612

4,443,144

1,721,600

2,932,332

Difference between drinking men and non-drinking women

       

2,291,719

3,903,391

 

Factor

Ratio

child murder:wife murder

4.9

boys murdered mother:father

49.4

girls murdered mother:father

49.4

non-drinking woman:drinking man

6.8

 

The results of the National Personal Transportation Survey, which are in a pdf file located at http://www.fhwa.dot.gov/ohim/1983/vol1pt1.pdf show that women drive only 30% of all miles, and men drive 70%, which changes the ratios considerably.  This would mean that women are 56% more likely per mile than men to have an accident rather than only 33%.  This means that if only men drove that there would be 2.22 accidents per million miles, which is 21.8% lower than the current rate of 2.84 crashes per million miles, which would save 9,159 lives per year.  This is also 8.3% lower than men's current crash rate of 2.42, which means that 8.3% or 200,760 of the accidents which men currently have are caused by women drivers.  If only women drove, the accident rate would be 4.46 accidents per million miles, which is 57% higher than the current total crash rate and 18% higher than women's current crash rate of 3.78, which would increase the number of traffic fatalities by 23,893 per year.  Over the next thirty years, based on the current population growth projection of 1.1% per year, there would be 336,000 fewer traffic fatalities if only men drove.  Conversely, there would be 877,000 more traffic fatalities if only women drove, 282,000 of whom would have been women.

This data shows that if only men drove, the cost to repair automobile crashes would be between $30 billion to $44  billion less, and 9,159 of the 41,967 lives currently lost each year to auto accidents would be saved.  Over the next three decades, this is a savings of as much as $1.6 trillion and 336,000 lives.

 

Men

Women

Percent

Total

Miles Driven (billions)

1000

450

 

1,450

Drivers in crashes per year

2,418,799

1,701,043

 

4,119,842

Current crash rate per million miles

2.42

3.78

56.3%

2.84

Single driver crash rate per million miles

1.072

1.67

55.8%

 

Crash rate with one same sex driver

0.79

0.87

   

Crash rate with one opposite sex driver

0.56

1.23

   

Total crash rate with both sexes driving

2.42

3.77

55.8%

 

Current total drivers in crashes

2,420,132

1,696,576

-29.9%

 

Single driver crashes, one sex driving

1,554,400

2,421,500

55.8%

 

Two driver crashes, one sex driving

1,666,317

4,043,905

142.7%

 

Crash rate with only one sex driving

2.22

4.46

100.7%

 

Drivers in crashes with only one sex driving all miles

3,220,717

6,465,405

2.01

3,244,688

Number of drivers in single driver accidents

1,071,409

753,479

44.3%

44.4%

Number of drivers in same sex accidents

792,104

390,510

32.7%

23.0%

Number of drivers in opposite sex accidents

555,286

557,055

22.9%

32.8%

Change if only one sex drove

-899,125

2,345,563

3,244,688

 

change in percent

-21.8%

56.9%

   

Total accidents

1,745,104

1,227,261

2,972,365

 

Current fatalities, both sexes driving

     

41,967

Fatalities with one sex driving

32,808

65,860

   

Difference per year in number of fatalities

-9,159

23,893

   

Difference in number of fatalities over 30 years

-336,167

+876,955

   

 

References:

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If you were to believe all of the claims made by the NHTSA (National Highway Traffic Safety Administration) Report DOT HS 808 770, you would believe that all kinds of new laws (DUI Laws, Helmet Laws, Safety Laws, Minimum Age Drinking Laws, Open Container Laws, Repeat Intoxicated Driver Laws, Bicycle Helmet Laws, Air Bag Laws, Child Passenger Laws, etc) saved 21,880 lives in one year.  However, the actual decrease in the number of fatalities due to the decrease in the motor vehicle fatality rate was only 4,423, which is 17,457 fewer than all the claims.  It is suspicious that NHTSA claims that the percent of alcohol-related fatalities decreased from 51% in 1987 to 30.3% in 1997, when such a decrease is almost equal to the actual total decrease in traffic fatalities.   It is also contradictory to police reports in the Statistical Abstract of the United States which report that only 4% of all accidents are "alcohol involved".

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