motorcoach driver fatigue study sponsored by the f ederal motor carrier safety administration
DESCRIPTION
Motorcoach Driver Fatigue Study Sponsored by the F ederal Motor Carrier Safety Administration. Gregory Belenky, M.D. Lora J. Wu, M.S. Jack Hodges Washington State University. Driver Sample. 80 motorcoach drivers (20 women), middle-aged and overweight - PowerPoint PPT PresentationTRANSCRIPT
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Motorcoach Driver Fatigue StudySponsored by the
Federal Motor Carrier Safety Administration
Gregory Belenky, M.D.
Lora J. Wu, M.S.
Jack Hodges
Washington State University
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Driver Sample• 80 motorcoach drivers (20 women), middle-
aged and overweight• Studied for an average of 30 consecutive days
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
0
5
10
15
20
Total Days in the Study per Participant - All
Number of days recorded (Days)
Fre
qu
ency
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Number of Volunteers by Operation
• Charter -18• Tour -13• Regular Route - 25• Commuter Express -24
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Exposure
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:0
0
11:0
0
12:0
0
13:0
0
14:0
0
15:0
0
16:0
0
17:0
0
0.00%10.00%20.00%30.00%40.00%50.00%60.00%70.00%80.00%90.00%
100.00%
All
Total Duty Time (Hours:Minutes)
Cu
mu
lati
ve F
req
uen
cy
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Mean Duty Hours per Week by Driver - All
5:00
:00
10:0
0:00
15:0
0:00
20:0
0:00
25:0
0:00
30:0
0:00
35:0
0:00
40:0
0:00
45:0
0:00
50:0
0:00
55:0
0:00
60:0
0:00
65:0
0:00
70:0
0:00
75:0
0:00
80:0
0:00
0
4
8
12
16
20
All
Mean Duty Hours/Week (Hours:Minutes)
Nu
mb
er o
f D
rive
rs
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Mean Duty Hours per Week by Driver – By Type of Operation
5:00
:00
10:0
0:00
15:0
0:00
20:0
0:00
25:0
0:00
30:0
0:00
35:0
0:00
40:0
0:00
45:0
0:00
50:0
0:00
55:0
0:00
60:0
0:00
65:0
0:00
70:0
0:00
75:0
0:00
80:0
0:00
0
2
4
6
Charter
Mean Duty Hours/Week (Hours:Minutes)
Nu
mb
er o
f D
rive
rs
5:00
:00
15:0
0:00
25:0
0:00
35:0
0:00
45:0
0:00
55:0
0:00
65:0
0:00
75:0
0:00
0
2
4
6Tour
Mean Duty Hours/Week (Hours:Minutes)
Nu
mb
er o
f D
rive
rs
5:00
:00
10:0
0:00
15:0
0:00
20:0
0:00
25:0
0:00
30:0
0:00
35:0
0:00
40:0
0:00
45:0
0:00
50:0
0:00
55:0
0:00
60:0
0:00
65:0
0:00
70:0
0:00
75:0
0:00
80:0
0:00
0
2
4
6Regular Route
Mean Duty Hours/Week (Hours:Minutes)
Nu
mb
er o
f D
rive
rs
5:00
:00
15:0
0:0
0
25:0
0:0
0
35:0
0:0
0
45:0
0:0
0
55:0
0:0
0
65:0
0:0
0
75:0
0:0
0
0
2
4
6Commuter Express
Mean Duty Hours/Week (Hours:Minutes)
Nu
mb
er o
f D
rive
rs
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Duty Start Time by Duty Day – All
0:00
1:30
3:00
4:30
6:00
7:30
9:00
10:3
012
:00
13:3
015
:00
16:3
018
:00
19:3
021
:00
22:3
00
20406080
100120140160180200
All
Starting Hour (Hours:Minutes)
Nu
mb
er o
f D
ays
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Duty Start Time by Duty Day – By Type of Operation
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Duty Start Time by Driver by Duty Day -All
3:00
3:30
4:00
4:30
5:00
5:30
6:00
6:30
7:00
7:30
8:00
8:30
9:00
9:30
10:0
010
:30
11:0
011
:30
12:0
012
:30
13:0
013
:30
14:0
014
:30
15:0
0
0
2
4
6
8
10
12
All
Starting Hour (Hours:Minutes)
Fre
qu
ency
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Duty Start Time by Driver by Duty Day – By Type of Operation
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On Duty Time by Duty Day - All
0:00
1:30
3:00
4:30
6:00
7:30
9:00
10:3
012
:00
13:3
015
:00
16:3
018
:00
19:3
021
:00
22:3
00
20406080
100120140160180200
All
On Duty Time (Hours:Minutes)
Nu
mb
er o
f D
ays
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On Duty Time by Duty Day – By Type of Operation
Charter B
Tour A
Regular Route
B
Commuter Express
C
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Mean On Duty Time by Driver by Duty Day - All
6:00
6:30
7:00
7:30
8:00
8:30
9:00
9:30
10:0
0
10:3
0
11:0
0
11:3
0
12:0
0
12:3
0
13:0
0
13:3
0
14:0
0
14:3
0
15:0
0
0123456789
10
All
Duty Day Duration (Hours:Minutes)
Nu
mb
er o
f D
rive
rs
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Mean On Duty Time by Driver by Duty Day – By Type of Operation
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Total Sleep Time by Day - All
1:30
2:30
3:30
4:30
5:30
6:30
7:30
8:30
9:30
10:3
0
11:3
0
12:3
0
13:3
0
14:3
0
15:3
0
16:3
0
17:3
0
0
40
80
120
160
200
240
All
Total Sleep Time (Hours:Minutes)
Nu
mb
er o
f d
ays
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Total Sleep Time On/Off Duty by Day - All
1:30
2:30
3:30
4:30
5:30
6:30
7:30
8:30
9:30
10:3
0
11:3
0
12:3
0
13:3
0
14:3
0
15:3
0
16:3
0
17:3
0
0
40
80
120
160
200
All
On Duty Off Duty
Total Sleep Time (Hours:Minutes)
Nu
mb
er o
f D
ays
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Total Sleep Time for On-Duty Days and Off-Duty Days
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Total Sleep Time by Day – By Type of Operation
Charter B
Tour A
Regular Route
B
Commuter Express
C
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Total Sleep Time On/Off Duty by Day – By Type of Operation
Charter A
Tour B
Regular Route
C
Commuter Express
D
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Sleep by Operation On and Off Duty
Charter Tour Regular Route
Commuter Express
0:00
0:59
1:59
2:59
3:59
4:59
5:59
6:59
7:59
8:59
9:59Off DutyOn Duty
Tot
al S
leep
Tim
e (H
ours
:Min
ute
s)
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Average Total Sleep Time by Driver by Day - All
5:00
5:30
6:00
6:30
7:00
7:30
8:00
8:30
9:00
9:30
10:0
0
10:3
0
11:0
0
11:3
0
12:0
0
02468
101214161820
All
Total Sleep Time (Hours:Minutes)
Nu
mb
er o
f D
rive
rs
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Average Total Sleep Time On/Off Duty by Driver by Day - All
3:30
4:00
4:30
5:00
5:30
6:00
6:30
7:00
7:30
8:00
8:30
9:00
9:30
10:0
0
10:3
0
11:0
0
11:3
0
12:0
0
12:3
0
13:0
0
13:3
0
0
4
8
12
16
20
All
On Duty Off Duty
Sleep Duration (Hours:Minutes)
Fre
qu
ency
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Average Total Sleep Time by Driver by Day – By Type of Operation
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Average Total Sleep Time On/Off Duty by Driver by Day – By Type of Operation
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Correlation of On Duty Time by Duty Day with Total Sleep Time by Duty Day - All
0:00
1:59
3:59
5:59
7:59
9:59
11:5
9
13:5
9
15:5
9
17:5
9
19:5
9
21:5
90:00
1:59
3:59
5:59
7:59
9:59
11:59
13:59
15:59
17:59
All
Total Duty Time (Hours:Minutes)
Tot
al S
leep
Tim
e (H
ours
:Min
ute
s)
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Correlation of On Duty Time by Duty Day with Total Sleep Time by Duty Day – By
Type of Operation
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Correlation of On Duty Time by Duty Day with Total Sleep Time by Duty Day by Driver - All
0:00
0:59
1:59
2:59
3:59
4:59
5:59
6:59
7:59
8:59
9:59
10:5
9
11:5
9
12:5
9
13:5
90:000:591:592:593:594:595:596:597:598:599:59
10:5911:59
All
Total Duty Time (Hours:Minutes)
Tot
al S
leep
Tim
e (H
ours
:Min
ute
s)
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Correlation of On Duty Time by Duty Day with Total Sleep Time by Duty Day by
Driver – By Type of Operation
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Driver Subjective Fatigue at the Start and End of the Duty Day Measured using the Samn-Perelli Fatigue Scale - All
Start of Duty End of Duty1
2
3
4
5
6
7
AllS
amn
-Per
elli
Fat
igu
e R
atin
g
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Driver Subjective Fatigue at the Start and End of the Duty Day Measured using the Samn-Perelli Fatigue
Scale – By Type of Operation
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Driver Subjective Sleepiness at the Start and end of the Duty Day Measured using the Karolinska Sleepiness
Scale - All
Start of Duty End of Duty1
2
3
4
5
6
7
8
9
AllK
arol
insk
a S
leep
Rat
ing
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Driver Subjective Sleepiness at the Start and end of the Duty Day Measured using the Karolinska Sleepiness
Scale – By Type of Operation
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PVT
Start of Duty Start of Break End of Break End of Duty0.0025
0.0027
0.0029
0.0031
0.0033
0.0035
0.0037
Mean Speed of PVT Test vs PVT Type
Charter
Tour
Regular Route
Commuter Express
PVT Code
Mea
n S
pee
d (
1/R
T)
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Summary of Findings
• 80 motorcoach drivers studied for ~30 days• Charter, Tour, Regular Route, Commuter Express• Start of duty in early to mid-morning• Duty day on average 10-11 hours• Worked an average of 40-50 hours/week• Slept an average of 7-8 hours on duty days and off
duty days• Poorer performance and more fatigue and sleepiness
at end of duty day compared to the beginning
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Washington State University
Gregory Belenky, M.D.Research Professor and DirectorSleep and Performance Research CenterWashington State University P.O. Box 1495Spokane, WA 99210-1495
Phone: (509) 358-7738FAX: (509) 358-7627Email: [email protected]
Point of Contact