Download Document

CELL PHONE USAGE WHILE DRIVING
INFLUENCE ON DRIVER'S REACTION TIME
Igor Milanović
dr Željko Ranković
mr Aleksandar Gošić
Contents
 Cell phones – necessity, but often used
while driving.
 Four sort of distraction: visual, auditory,
physical and cognitive.
 Vast number of cell phone’s functions.
 Distraction of driver’s attention.
 Even 50% of drivers use cell phone while
driving.
Key results
 Reaction time meter Multihrono
803,
 20 drivers, each 15 tests,
 Limit reaction time 0,540 s and less
than 3 mistakes,
 Average age 23-40 years, driver
experience 4-21 years,
 Time measured with no usage,
then with usage of cell phone.
Discussion
 Statistical analysis by IBM SPSS Statistics 19.0. SPSS.
 Reaction time with no usage of cell phone – mean is 0.465
s, standard deviation is 0.067. Reaction time with usage of
cell phone – mean is 0.692 s, standard deviation is 0.141.
 Median value of reaction time increased by 0.213.
 Test of normality: Kolmogorov-Smirnov and Shapiro-Wilk.
 Paired-Samples T test is used for assessing null hypothesis .
Conclusion
 Average increased reaction time by 0.213 s.
 Drivers could have expected that they will get signal
to react.
 Drivers who have not used cell phones made 49
mistakes (2.45 each driver), otherwise drivers who
have used cell phones made 61 mistakes, or 3.05
each driver.
 Cell phones have negative influence on drivers while
driving.
THANK YOU FOR YOUR ATTENTION …