Volume 15 Issue 07, July 2025
Impact factor: 2019: 4.679 2020: 5.015 2021: 5.436, 2022: 5.242, 2023:
6.995, 2024 7.75
http://www.internationaljournal.co.in/index.php/jasass
149
PSYCHOPHYSIOLOGICAL STATE OF THE DRIVER AND ITS IMPACT ON
MOVEMENT SAFETY.
Zingirov Saydolim Zhuraevich
Andijan State Technical Institute, Andijan, Uzbekistan
Faculty of Automotive Engineering and Transport,
Associate Professor of the Department of Transport and Logistics
Abstract:
In this article, the influence of the driver's psychophysiological state on traffic safety
is analyzed. The importance of stress, fatigue, distracted attention, and mental state is highlighted.
Based on the scientific facts presented in the article, we pointed out the need to improve the
psychophysiological state of drivers.
Keywords
: driver, character, stress, fatigue, pressure, risk.
Introduction
. Studies show that under stress, the driver's decision-making speed and ability to
think clearly decrease, which can lead to road accidents. The reaction rate of a tired driver
creates a state similar to that of a driver who has consumed alcohol. Distracting factors, such as
telephone conversations, external noise, or music, can distract the driver from the road and lead
to making wrong decisions in dangerous situations.
Mental state, for example, mood, also has a significant impact on the driver's road safety. Drivers
who are in a bad mood or angry tend to violate traffic rules, which can lead to road accidents.
Also, psychomotor functions, that is, the ability to react quickly and maintain balance, play an
important role in safe driving.
Therefore, it is necessary to conduct medical and psychological examinations, as well as regular
training to improve and control the psychophysiological state of drivers. This contributes to
ensuring the safety of the driver, as well as road safety, and reduces road accidents. The article
also provides practical recommendations for improving the psychophysiological state of
drivers[1].
1. The influence of psychophysiological state and stress.
The driver's mental state, their psychological and physiological state, directly affects road safety.
Stress, irritability, and an aggressive mood weaken the driver's decision-making ability. Studies
show that the probability of accidents by drivers under stress increases 2-3 times. In such cases,
the driver cannot make quick and accurate decisions.
Volume 15 Issue 07, July 2025
Impact factor: 2019: 4.679 2020: 5.015 2021: 5.436, 2022: 5.242, 2023:
6.995, 2024 7.75
http://www.internationaljournal.co.in/index.php/jasass
150
Figure 1. Fatigue and stress
Drivers in a state of stress can also slow down their reactions. This situation prevents the driver
from making the right decisions quickly and taking the right actions. According to research,
distracting factors have a greater impact on drivers under stress. For example, external noise,
telephone conversations, or other unpleasant situations can distract the driver's attention from the
road. This, in turn, leads to making wrong decisions in dangerous situations.
Long-term exposure to stress can also affect physical condition. In drivers who have been under
stress for a long time, the heart rate increases, blood pressure rises, and muscles strengthen.
These situations lead to fatigue of the driver and a decrease in his attention, as a result of which
it becomes difficult to make the right decisions and react in a timely manner in dangerous
situations [3].
2. Fatigue and lack of sleep.
Fatigue significantly slows down the driver's reaction rate. According to research, drivers who
have been deprived of sleep for more than 18 hours have the same reaction rate as those who
have consumed alcohol. The effects of fatigue can be felt during long-distance driving. This
reduces road safety.
Effects of sleep deprivation:
Lack of sleep seriously affects the driver's psychomotor abilities. Prolonged lack of sleep reduces
the driver's reaction rate, makes it difficult to concentrate, and weakens the ability to make quick
decisions. Studies show that drivers who are not adequately rested from sleep are equally likely
to make mistakes compared to drivers who have consumed alcohol, and the likelihood of
accidents increases.
Tired drivers often make wrong decisions in dangerous situations, not realizing that they need to
drive more carefully. For example, a tired driver may struggle to maintain the pre-planned speed
or experience significant braking delays, which can lead to a traffic accident.
Volume 15 Issue 07, July 2025
Impact factor: 2019: 4.679 2020: 5.015 2021: 5.436, 2022: 5.242, 2023:
6.995, 2024 7.75
http://www.internationaljournal.co.in/index.php/jasass
151
Fig. 2.
Lack of sleep.
The effect of fatigue in long-distance driving. Sleep deprivation during long-distance driving,
especially at night or for a long time, significantly reduces the driver's safety. Studies show that
drivers who do not sleep for a long time experience a decrease in their psychomotor and
cognitive functions. In this case, the driver may not feel fatigue, which prevents them from
responding to dangerous situations sufficiently quickly. For example, a driver who has been on
the road for a long time may have difficulty concentrating their attention and may not notice
their physical condition. As a result, the driver may encounter a dangerous situation without
realizing their fatigue. Therefore, during long-distance driving, it is important to take regular
breaks, rest for a short time, and get good sleep.
Measures to eliminate fatigue. To reduce fatigue, drivers should regularly rest and allocate
enough time for sleep. Good sleep helps maintain the driver's ability to concentrate, restore
reaction speed, and make correct decisions in dangerous situations. Drivers are also
recommended to take breaks during long-distance driving, eliminate inactive states, and perform
physical exercises to refresh the div [5].
Distraction. Distraction is one of the main causes of traffic accidents. According to Japanese
research, distracting factors (telephone, external noise, conversations) lead to 25-30% of
accidents. The driver's distraction from the road prevents them from making the right decisions
in dangerous situations.
Conclusion
The driver's psychophysiological state directly affects their safe driving. Improves stress, fatigue,
distraction, mental state, and psychomotor functions, contributing to increased road safety.
Monitoring the psychophysiological state plays an important role in ensuring the driver's safe
driving.
It is necessary to conduct regular psychological and physiological examinations, as well as
trainings aimed at reducing stress, focusing, preventing fatigue, and improving mental state.
Improving the psychophysiological preparedness of drivers strengthens their ability to correctly
and quickly respond to dangerous situations. At the same time, the promotion of a healthy
lifestyle for drivers contributes to the improvement of physical and mental health, which makes a
great contribution to ensuring overall safety.
In ensuring road safety, not only technological advancements and improvements in transport
facilities are insufficient, but it is also necessary to monitor the driver's psychophysiological state.
Volume 15 Issue 07, July 2025
Impact factor: 2019: 4.679 2020: 5.015 2021: 5.436, 2022: 5.242, 2023:
6.995, 2024 7.75
http://www.internationaljournal.co.in/index.php/jasass
152
Therefore, training drivers through psychophysiological examinations and training helps to
reduce traffic accidents and increase safety.
References:
1. D. Reason. Human Error. Cambridge University Press. p. 176.
2. Williamson, A., Feyer, A.-M. "Moderate sleep deprivation produces impairments in
cognitive and motor performance equivalent to legally prescribed levels of alcohol intoxication."
Occupational and Environmental Medicine. 105-111.
3. Yamamoto, T. "Driver distraction in Japan: effects of cell phone use." Journal of Safety
Research. p. 291.
4. Moskowitz, H. & Fiorentino, D. A Review of the Literature on the Effects of Low Doses of
Alcohol on Driving-Related Skills.
5. WHO. Global Status Report on Road Safety, 2018.
