what percentage of drivers admit to driving drowsy in the past year?

Index

Documentation Page

Chapter 1

Affiliate 2

Chapter three

Affiliate 4

Section ane: 2002 Survey Administration Findings

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Chapter 4: Drowsy Driving

Drowsy driving can be considered another form of distracted driving in that drivers experiencing drowsiness do not apply their total attention to the driving task. Yet, drowsy driving is a problem of its ain.

In the 1996 appropriations bill for the U.S. Section of Transportation, the Senate Appropriations Committee written report noted that "NHTSA data indicate that in recent years in that location have been about 56,000 crashes annually in which driver drowsiness/fatigue was cited by police. Annual averages of roughly twoscore,000 nonfatal injuries and 1,550 fatalities result from these crashes. It is widely recognized that these statistics underreport the extent of these types of crashes. These statistics also exercise not deal with crashes caused by driver inattention, which is believed to be a larger problem."

This section provides information on the driving age public's experiences and perceptions regarding drowsy driving. Specifically it covers the following topics:

· Experience with driving while drowsy
· Characteristics of most recent drowsy driving trip
· Measures to prevent falling comatose while driving
· Outcomes of drowsy driving
· Perceived threat of drowsy driving

Experiences With Drowsy Driving

Nodding Off While Driving

Overall, 37% of the driving population says they accept nodded off for at least a moment or fallen asleep while driving at some time in their life. Males (49%) are almost twice as likely to written report having nodded off while driving than are female drivers (26%).
Not surprisingly, newer drivers (i.due east. those nether historic period 21) who have had less time driving overall, are but half every bit probable to have experienced nodding off while driving (xviii%) as older drivers. And, just as drivers over age 64 are less likely to undertake behaviors that are potentially distracting, these drivers are likewise less likely to have nodded off while driving (30%). [Effigy 13-A]

Recency of Drowsy Driving

While 37% of drivers have nodded off while driving at some point in their lives, approximately three out of x (29%) of these drivers report that they concluding experienced this problem within the past yr, with simply one in 10 (10%) saying this happened to them within the past month. This amounts to nearly 4% of the driving population or an estimated 7.5 million drivers who have nodded off while driving within the past month. An additional 4% of drivers (11% of those who take ever nodded off at the wheel) report having done then within the by ii to vi months. [Figure 13-B]

By Gender and Age

Nearly 22% of male drivers who have nodded off at the wheel report having done so within the past month as compared to nineteen% of their female counterparts.

While drivers under age 21 are only half equally likely to have had an experience of falling asleep while driving, slightly more than four of 10 (44%) of those report having this experience inside the past six months. [Figure 13-D]

Characteristics of Most Recent Drowsy Driving Trip

In social club to better sympathize the conditions under which drivers experience drowsy driving, drivers who reported having nodded off while driving within the past vi months were asked a serial of defining characteristics of their near recent experience.

Time of Day

While some concur the perception that drowsy driving occurs generally belatedly at night or in the early forenoon hours, merely 28% of drivers reporting a recent drowsy driving feel written report this experience occurring between the hours of midnight and six:00 a.m. More than 1-third (35%) of drivers who nodded off while driving within the past six months say their concluding experience occurred between 6:00 a.m. and 5:00 p.m. An additional 17% study they nodded off between five:00 p.m. and nine:00 p.thousand. [Figure xiv-A]

Average Length of Time Driving

While slightly more than one in five (22%) drivers who recently experienced a drowsy driving episode report having been on the road driving for five or more than hours, nearly one-half (47%) were driving for an hour or less. [Effigy 14-B]

On average, these drivers were driving for almost three hours before they nodded off. Males had driven for about an hour longer than females on average (three.2 as compared to 2.two hours). Drivers age 30 and over became drowsy in a shorter amount of time than younger drivers. [Figure 14-C]

Type of Road Driving

Nearly six in ten (58%) drivers with a recent drowsy driving episode report this occurrence on multi-lane interstate highways, 23% written report nodding off while driving on a two-lane route with posted speed limits of 45 MPH or higher, and fewer than ane in ten drivers nodded off while driving on non-interstate multi-lane roads (8%) or local city or neighborhood roads (8%). [Effigy 14-D] This report of nodding off feel by road type does non match the overall design of driving by road type. Simply 55% of drivers study frequently driving on multi-lane interstate highways as compared with 83% who oftentimes drive local metropolis or neighborhood roads. [Figure ii-A]

Number of Hours Slept the Dark Before

While about one in 4 (24%) drivers experiencing a recent drowsy driving episode reported having but 4 or fewer hours of sleep the night before, a full one-third (33%) of the drivers had at least vii hours of sleep. An additional 26% written report receiving nearly six hours of sleep the prior night. [Effigy fifteen-A]

While drowsy drivers on boilerplate had received vi hours of sleep the night earlier they nodded off while driving, older drivers written report having a drowsy driving episode fifty-fifty after longer sleep times. Drowsy drivers nether age 30 reported an average of 5.v hours of sleep the night before they nodded off at the wheel. The boilerplate slumber fourth dimension of drowsy drivers increases with age, with those age 65 or older reporting a drowsy driving episode subsequently an average of 7.7 hours of sleep the prior night. [Figure xv-B]

Utilize of Alcohol or Medications Prior to Driving

Relatively few drivers who nod off at the wheel report having had consumed alcohol (ii%) or allergy or other medications (12%) prior to their trip. Alcohol is reported more than of a factor among those in their 20s, of whom 5% report having consumed alcohol prior to their trip. Drivers age thirty-45 are least probable to report either alcohol (0%) or medication (six%) as a gene in their drowsy driving. [Figure 15-C]

Number of Hours Slept the Dark Earlier
While most one in iv (24%) drivers experiencing a recent drowsy driving episode reported having only 4 or fewer hours of sleep the dark before, a full 1-third (33%) of the drivers had at least seven hours of sleep. An boosted 26% written report receiving about half dozen hours of slumber the prior night. [Figure 15-A]
While drowsy drivers on average had received six hours of sleep the night before they nodded off while driving, older drivers study having a drowsy driving episode even after longer sleep times. Dwsy

Preventative Measures for Drowsy Driving

Actions Taken When Feel Sleepy While Driving

While only about eleven% of all drivers say they have nodded off or fallen comatose while driving in the by year, we asked all drivers what actions they take if they feel sleepy while driving. Well-nigh i-half of all drivers mention multiple actions, most of which serve as a change of status quo that alters the current driving experience. The majority of actions are concrete in nature rather than cerebral changes. It is important to note that drivers who take nodded off while driving take different actions than those who have never nodded off.

The largest proportion of drivers (43%) say they pull over and take a nap, while an additional 15% say they just pull over or get off the road. Six pct (6%) change drivers. About 1 in ten (9%) get out of the car to stretch or exercise. Nearly one in four (26%) open up a window to go air, while about one in five get a coffee or soda to drink (17%) or get something to eat (three%). One in seven (14%) say they turn on the radio or increase its volume, while an additional iii% say they sing or talk to himself or herself or another person (via cell phone) or a fellow passenger. [Figure xvi-A]

By Gender and Age

Male drivers are much more probable to say they pull over and take a nap if they experience sleepy while driving (46% equally compared to 39% of females), while female drivers are more likely to open up a window (28% as compared to 24%). [Figure 16-B]

The prevalence of drivers taking physical actions such as pulling over to nap, getting out of the motorcar to stretch or exercise, and pulling over to get off the road all increase somewhat with historic period. Simply 33% of drivers under historic period 21 reports that they pull over and nap as compared to 48% of those over age 45. Similarly, but 3% of the young drivers get out to exercise or stretch equally compared to 12% of the older drivers. Immature drivers are most likely to rely upon turning the radio loud to keep them awake if they feel sleepy. More than one-third (35%) of drivers under 21 rely on this activity as compared to just 6% of drivers over historic period 64. [Figure xvi-C]

By Drowsy Driving Experience

Drivers who accept ever nodded off while driving are more than likely than those who accept never nodded off at the bicycle to open a window (34% as compared to 21% of those who accept never nodded off), to get a soda or coffee (20% as compared to 15%), become out of the automobile and stretch or exercise (12% compared to 7%), and to turn the radio on loud (19% compared to xi%). Those who have never nodded off while driving are more likely to say they pull over and take a nap (46% versus 38%) or pull over to get off of the road (16% compared to 12%). [Figure 16-D]

Outcomes of Drowsy Driving

Outcome of Nodding Off on Well-nigh Recent Occasion

The overwhelming majority (92%) of drivers who have nodded off while driving within the by six months report that they startled awake. However, sizable proportions of these drivers' experiences had more dangerous outcomes. 1 of three (33%) wandered into some other lane or onto the shoulder, while nineteen% say they crossed the centerline. In one in ten (10%) cases, the driver ran off the route. While information technology happened in only about 2% of the most recent drowsy driving episodes, it is estimated that approximately 292,000 drivers were involved in some type of crash inside the past half-dozen months equally a result of nodding off at the cycle. [Figure 17-A]

Involved in Crash every bit Issue of Nodding Off Past Five Years

Less than one percentage (.7%) of all drivers (ane.iv% of those who accept e'er nodded off while driving, and 6.4% of those who accept done so in the past vi months) report they have been involved in a crash within the past 5 years that they aspect to them nodding off or having to greatly struggle to keep their eyes open. This equates to 2.5% of drivers who have been in any crash in the past five years attributing a crash to drowsy driving.

Males are twice as likely as females to have been in such a crash (i.0% compared to .four%). While the total numbers of drivers involved is still small, drivers under age 30 are most half-dozen times more likely (i.eight% accept) to report involvement in a crash as a result of drowsy driving as are older drivers (.3%). [Figure 17-B]

While the proportion of drivers involved in a crash as a event of nodding off at the wheel is very small, the bodily numbers of drivers involved in such crashes over the past five years is sizable. Figure 17-C shows the estimated numbers of drivers by age and gender involved in a drowsy driving-related crash, forth with high and low ranges around the estimates.

An estimated i.35 million drivers have been involved in a drowsy driving related crash in the past five years. About seven in ten of these drivers, or 972,000 were males, while 379,000 were females. Young drivers make a disproportionally high number of drowsy driving-related crashes, with almost 274,000 drivers under age 21 involved in a drowsy driving-related crash within the past five years. These young drivers brand up about 20% of all drivers involved in such a crash, yet these drivers under historic period 21 make up about 8.5% of the driving population. Similarly, about 44% of all drivers involved in a drowsy driving-related crash are in their 20s (594,000 drivers) yet they brand up merely fifteen% of the driving population. Relatively few drivers over historic period 64 (xviii,000) have had a drowsy driving-related crash in the past five years.

Perceived Threat of Driving While Drowsy

Perceived Threat of Other Drivers Driving While Sleepy or Drowsy
Virtually all drivers believe that other drivers who drive while sleepy or drowsy are a threat to their own personal safe and that of their family. Ninety-v percent (95%) believe this behavior past others to be a major threat, while 5% see it as a pocket-size threat. [Figure 18-A]

By Gender

There is little substantive deviation in the perception of the threat of other drivers who drive while drowsy or sleepy betwixt male and female drivers. Male drivers are slightly more likely to view this behavior as a small-scale (half-dozen%), rather than a major (93%) threat to their and their family's rubber as compared to female drivers (3% and 96% respectively). However, all drivers see the behavior equally a personal threat to their safety. [Figure 18-B]

Past Historic period

In that location is too little difference in the perceived threat of others' driving while drowsy or sleepy by age, with the exception that drivers in their 20s are more likely to see this behavior every bit a small-scale (8%) rather than a major threat (91%) to their and their family's safety. [Effigy 18-C]

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Source: https://one.nhtsa.gov/people/injury/drowsy_driving1/survey-distractive03/drowsy.htm

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