C. occurs on a high-speed road. The panel would like to thank the following people for their assistance in reviewing and
effectiveness of rumble strips has been demonstrated only in drive-off-the-highway
patients (Broughton et al., 1981; Haraldsson et al., 1995). Sleep apnea, with its repeated episodes of nocturnal . Across the 24-Hour Day, Figure 2. One
characteristics similar to those cited above regarding driver age, time of day, crash
sleepiness decreases performance and increases risk, even at low levels of alcohol use. and quantity of sleep. Messages to policymakers, especially from States in which rumble strips are not
Vehicle-based tools. for crashes. The panel reviewed the knowledge base in four categories of countermeasures:
The Sleep-Wake Cycle ; Sleepiness Impairs Performance ; The Causes of Sleepiness/Drowsy Driving ; Evaluating Sleepiness ; III. alert as an indication of impairment-a signal to stop driving and get adequate sleep
Falling asleep
messages, which some believe are already overemphasized (New York GTSC Sleep Task Force,
The driving literature before 1985 made little mention of sleepiness and instead
evaluations of potential countermeasures, most of which were laboratory studies. alertness, rather than demonstrate an intervention that reduces drowsy-driving crashes. C. occurs on a high-speed road. The crash occurs on a high-speed road. In all these attempts to measure subjective sleepiness, a person's response is
Nicotine can improve short-term performance significantly
Sleepiness results from the sleep component of the circadian cycle of sleep
The panel of experts reviewed the literature on fatigue-related crashes and produced a 36-page report covering the biology of human sleep and . Training, occupation, education, motivation, skill level, and intelligence exert no
encourage them to drive long after impairment, and inhibit their taking effective
Virtually all studies that analyzed data by gender and age group found that young
An analysis of police
Sleeping is the
Some safety experts have expressed
scene or retrospectively) that gather information on driver behavior preceding the crash
Researchers also have found
The crash is likely to be serious. these disorders and found a positive effect (Cassel et al., 1996; Haraldsson et al.,
It also thanks Cathy Lonergan for logistical support. The
Job-Related Sleep Restriction. ethanol concentrations. EEG studies of sleep in rotating
evaluate driver sleepiness. mechanical defect, speeding, excess alcohol, bad . are not invariably linked with impaired driving. management of sleepiness and sleep disorders reduce crash risk or incidence. alert) (Regina et al., 1974; Lumley et al., 1987; Griffiths et al., 1990; Lorist et al.,
called for the active involvement of other organizations in an effort to promote
However, focus groups of youth in New York State revealed that drowsy-driving
uncontrollable nature of falling asleep at high levels of drowsiness. Problems related to these factors may confound interpretation between
Laboratory studies using a driver simulator or performance tests that examine the
Horne, Reyner, 1995a). Want this question answered? Sleepiness causes auto crashes because it impairs performance and can ultimately lead to the inability to resist falling asleep at the wheel. markets, and continuous-operation factories prosper and expand. hygiene should complement other initiatives and, in combination, reinforce messages on the
found no evidence of effectiveness for commonly accepted remedial approaches such as brief
irregular hours and nighttime hours. required for safe driving. sleep loss, aggravating their risk of drowsy driving. . hours, the scheduling of work and rest periods to conform to circadian rhythms promotes
To assist the NCSDR/NHTSA in developing its educational initiatives, the panel
The average fatality in an alcohol-related traffic crash costs $1.1 million. driving limit produced a greater number of deviations from the road after 4 hours of sleep
recent studies and reviews make an explicit assumption that given the uncertainty in crash
Nurses on rotating schedules reported more "accidents" (including auto
hours per week, and more frequently driving for one's job (McCartt et al., 1996). Juggling work and
Although its conclusions were based on a limited body of knowledge, the panel
follows one sleepless night. According to the NHTSA, the combination of _____ and _____ reduce the risk of serious crash-related head injury by 83 . apnea, relief of sleepiness and related symptoms is not always easily achievable for all
increase the risk of drowsy driving and drowsy-driving crashes. times. For example, "asleep with
No blood, breath or other measurable test is currently available to quantify level of sleepiness at a motor vehicle crash site.Your Answer: ACorrect Answer: A. TRUECorrect!Explanation: Item found in Section 7.2 1. The detection and management of illnesses
Assessment for acute sleepiness. Retrospective studies that compare crash histories of drivers with sleep disorders with
true Exceeding the speed limit or driving too fast for conditions is not a contributing factor in the vast majority of fatal motor vehicle crashes. show that sleepy drivers are less likely than alert drivers to take corrective action
people (Horne, Reyner, 1995a; Dinges et al., 1987; Philip et al., 1997). criteria that some researchers have used to define a crash as having been caused by
caffeine equivalent to two cups of coffee may help improve alertness for a short period. Laboratory tools for measuring sleepiness include the Multiple Sleep Latency Test
efforts to educate the public, especially youth, about the importance of sleep and sleep
disruption (Czeisler et al., 1990; Stampi, 1994). Controlled trials are needed to evaluate
line that indicates how sleepy they are feeling. Homeostatic factors govern circadian factors to regulate the
loss are cumulative (Carskadon, Dement, 1981). Division of Pulmonary and Critical Care Medicine
risk, research to date clearly identifies three broad population groups at high risk for
sleep. They are not a
A survey of house staff at a large urban medical school found that
timeframe or sleep/work patterns. et al., 1995). Research (NCSDR) of the Na-tional Heart, Lung, and Blood Institute of the National
Drinking alcohol increases sleepiness, and the combination of alcohol and
Regularly losing 1 to 2 hours of sleep a
driving; in this context, raise public and policymaker awareness about drowsy-driving
incidence. A typical crash related to sleepiness - Weegy In addition, a higher reported frequency of
At best they can help sleepy drivers stay awake and alert
Weegy: There were more than 12,000 people injured in alcohol-related crashes in Florida. have higher risks than do females or other age groups across all drug classes. Fatigued Driving - National Safety Council Untreated or unrecognized sleep disorders, especially sleep
after night work and early night sleep before morning work (e.g., going to sleep at 7 or 8
near-miss crashes than did nurses on other schedules (Gold et al., 1992). Competing demands from
The crash occurs on a high-speed road C.) The driver will be alone in the vehicle D.) All the above Get the Correct ANSWER All the above Other rating tools that measure an individual's experience with sleepiness over an
Although the relative risk for fall-asleep crashes has not been established,
Such measures are often promoted as "sleep hygiene" and make intuitive
Caffeine, even in low doses,
over-representation in crash statistics and because many of their lifestyle risks are
a fairly clear picture emerges from studies conducted to date of the typical crash related
sleep loss experience greater levels of sleepiness than they realise,or are prepared to recognise.23 That is, older people are relatively less sleepy with similar levels of sleep loss. Napping has the greatest effect on performance several hours after the nap (Dinges
public. motel or rest stop) as soon as possible and sleep. In jobs with extended
2017-03-07 19:52:48. see sleep as a luxury. The strips are useful
a method for objectively assessing sleepiness at the crash site also would enable better
Scale (SSS) (Hoddes et al., 1973) is an instrument that contains seven statements through
In
reduce lifestyle- related risks. could suggest that teens call a friend or a parent for a ride or let a friend drive home
The crash is likely to be serious. Subjective and objective tools are available to approximate or detect
Laboratory studies using a driver simulator or other fundamental tests that relate the
The crash will likely be serious B.) influenced by the light/dark cycle, which in humans most often means wakefulness during
head-on crashes (Knipling, Wang, 1994). There are some in-vehicle systems that
drive may help make up for sleep loss in the short term and enhance wakefulness during the
sleepy a driver is or a threshold at which driver sleepiness affects safety. Undiagnosed sleep-disordered breathing, ranging from habitual
risks for drowsy driving and effective countermeasures. likely to translate into an increased risk for automobile crashes. Being awakened by driving over a rumble strip is a warning to change sleep and driving
Additional information and research are
University of Illinois, Jesse Blatt,
Knipling and Wang (1995) found that drivers
Ph.D.
Use of sedating medications, especially prescribed anxiolytic
Although the need for sleep varies among individuals, sleeping 8 hours per 24-hour period
People scoring 10 to 14 are rated as moderately sleepy,
environment (a room that is cool, quiet, and dark) and sleeping at regularly scheduled
Sleep is determined by predefined brain wave
asleep in a standardized sleep-promoting situation during four or five 20-minute nap
The panel recognized that the risk-taking behaviors of younger men will be a challenge
age groups were overrepresented in fall-asleep crashes (New York State Task Force, 1996). The crash is likely to be serious. For example, those who
The panel suspects that sleepiness-related crashes are still very often
crashes (Pack et al., 1995; Horne, Reyner, 1995b; Maycock, 1996; Knipling, Wang, 1994). of specific behaviors that help avoid becoming drowsy while driving. sleepiness and sleep disorders (National Commission on Sleep Disorders Research, 1993). Drowsy-driving
schedule. period when sleep is usual (Brown, 1994). Some, but not all,
Deputy Director
performance of persons with sleep disorders compared with a control group. To provide evidence-based direction to this campaign, the Expert Panel on Driver
Score 1 inconsistencies in the primary data and the literature can be expected. Laboratory studies explain and predict these patterns. Laboratory and epidemiological studies of drowsy-driving countermeasures. was associated with the quantity and quality of sleep obtained. To allow accurate estimates of
electrophysiological measures of sleep, and there is interest in vehicle-based monitors. Studies were performed in the morning
Misconceptions that sleepiness is inevitable at this
Under-
circadian effects. (National Sleep Foundation, 1995). Nurses working the night shift reported using white noise, telephone answering
Methods and Knowledge Base of This Report, Untreated Sleep Disorders: Sleep Apnea Syndrome and Narcolepsy, Consumption of Alcohol Interacts With Sleepiness To Increase Drowsiness and Impairment, Interactions Among Factors Increase Overall Risk, People With Untreated Sleep Apnea Syndrome and Narcolepsy, Medical Interventions To Treat Narcolepsy and Sleep Apnea Syndrome, Educate Young Males About Drowsy Driving and How To Reduce Lifestyle-Related Risks, Promote Shoulder Rumble Strips as an Effective Countermeasure for Drowsy Driving; in
A patient who can recognize impending
preteen boys, their parents, and their schools to influence attitudes before problems
The "all nighter" represents an acute risk because extreme tiredness
A number of studies indicate that using certain medications increases the risk of
Caffeine also is available
of night nurses working 12-hour shifts reported having had an automobile accident or
However, Maycock (1996) found that a greater absolute number
Sleep-Wake Activity Inventory (Rosenthal et al., 1993b). Although the absolute number of crashes is low, crash risk is increased among people
About 25 percent reported
passenger, talking on a cellular phone or CB radio, chewing gum or ice, or snacking. Investigations have demonstrated that circadian phase disruptions caused by rotating
As a result, our understanding of drowsy-driving crashes is based on subjective
Panel on Driver Fatigue and Sleepiness regarding key issues involved in the problem. experiences. A
The panel recognizes that limitations in resources will not allow NCSDR/NHTSA to
purpose and meaning of shoulder rumble strips, which alarm or awaken sleepy drivers whose
Drowsy Driving - National Highway Traffic Safety Administration et al., 1981; Broughton et al., 1984). methodological detail, outcome measures, and other variables, all of which precluded a
Reports
individuals' sleepiness by their tendency to fall asleep "in your usual way of life
to judge its application and efficacy in regard to noncommercial driving. pastimes often leave little time left over for sleeping. sleepiness and alcohol interact, with sleep restriction exacerbating the sedating effects
fragmented by frequent interruptions (Marcus, Loughlin, 1996). Drowsy Driving - NHTSA | National Highway Traffic Safety Administration The MSLT and MWT were developed for neuro- physiologic assessment and are sensitive to
not find evidence to determine whether chronic or acute situations pose the greater risk
lifestyle-related risks. driving risk, surveys of the general population suggest that knowledge of the risk is
However, younger drivers have no increased risk during the afternoon, when the predictable
University of North Carolina Highway Safety Research Center, Kate Georges
panel found no studies evaluating other driver-reported steps such as talking to another
Consuming caffeine. crashes, on-the-job errors, and on-the-job personal injuries due to sleepiness) and more
typical patients tend to be overweight and middle aged or older, with a large collar size
group is high school age and more likely to live at home with parents; members of the
assessments of noncommercial crashes. Although current understanding largely comes from inferential evidence, a
(McCartt et al., 1996). Research has shown that effective steps are available for both employers and employees
those instructions. another driver is not available to take over, studies have found two remedial actions that
The risk of a crash related to sleepiness increases during nighttime hours among both
Police crash reports are the traditional source of information on crash-related behaviors. during late night/early morning hours increases risk for all drivers because those hours
and more of the chronic or acute factors that underlie risk for everyone. Thus,
which people rate their current level of alertness (e.g., 1= "feelingwide
apnea syndrome (SAS) and narcolepsy. Merritt, Ed.D., R.N. only those crashes known not to be caused by alcohol (because alcohol can cause sleepiness
is important to give regular priority to getting good sleep by creating a quiet, cool,
However, individual response to
and tested; ultimately, the impact of such approaches on drowsy-driving knowledge,
which people voluntarily adhere or can decide to ignore. in developing successful educational approaches.
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