Module 9: Cycles
February 2007

Commercial Vehicle Drivers Hours of Service
© Microsoft ®
In addition to daily and work shift limits, drivers need to work within cycle limits
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What are cycle limits?
How many off-duty hours must a driver take to reset the cycle?
What is “mandatory 24 hours off-duty”?
How do drivers switch cycles, restart their current cycle, or change the start time of their day?
Module 9 - 2

Commercial Vehicle Drivers Hours of Service
What will I learn in this module?
 Cycle limits
 Cycle resets
 Cycle switching
© Microsoft ®
Module 9 - 3

Commercial Vehicle Drivers Hours of Service
What are the cycle limits?
 Cycle 1 – limits on-duty time over a period of 7 days
 Cycle 2 – limits on-duty time over a period of 14 days
 Reach cycle limit - driver must stop driving
Module 9 - 4

Commercial Vehicle Drivers Hours of Service
What are the cycle resets?
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Driver can take extended period of off-duty time (cycle reset)
After reset period – accumulated on-duty hours set back to zero, driver starts new cycle and resumes driving
Driver does not have to take cycle reset – driver can reduce hours so as not to exceed 70 or 120 hours
Module 9 - 5

Commercial Vehicle Drivers Hours of Service
Cycle 1
 No driving after 70 hours on-duty time during any period of 7 consecutive days
 Driver must take at least 36 consecutive hours off-duty time to reset cycle
STOP DRIVING
AFTER
70 HOURS
ON-DUTY IN
7 DAYS
Module 9 - 6

Commercial Vehicle Drivers Hours of Service
Cycle 1 Example
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Off-Duty Off-Duty

14 hours on-duty

14 hours on-duty

14 hours on-duty

14 hours on-duty

14 hours on-duty
STOP
DRIVIN
G
STOP
DRIVIN
G
24 hours off-duty
12 hours off-duty
Start a new cycle
– resume driving
Module 9 - 7

Commercial Vehicle Drivers Hours of Service
Cycle 1 Example
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Off-Duty Off-Duty

13 hours on-duty

8 hours on-duty

12 hours on-duty

10 hours on-duty

11 hours on-duty

3 hours on-duty

10 hours on-duty

10 hours on-duty

13 hours on-duty

13 hours on-duty
STOP
DRIVIN
G
STOP
DRIVIN
G
24 hours off-duty
12 hours off-duty
Start a new cycle
– resume driving
Module 9 - 8

Commercial Vehicle Drivers Hours of Service
Sliding Window
Day #
1
2
5
6
3
4
7
8
9
10
Total On-Duty for Day Total On-Duty for 7 Days
13
8
12
10
11
3
10 67
10
13
13
64
69
70
Module 9 - 9

Commercial Vehicle Drivers Hours of Service
Cycle 2


No driving after 120 hours on-duty time in any period of 14 consecutive days
Driver can’t exceed 70 hours of on-duty time without taking at least 24 consecutive hours off-duty time
 Driver must take at least 72 consecutive hours off-duty time to reset cycle
STOP DRIVING
AFTER
120 HOURS
ON-DUTY IN
14 DAYS
Module 9 - 10

Commercial Vehicle Drivers Hours of Service
Cycle 2 Example
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Off-Duty Off-Duty Off-Duty

14 hours on-duty

14 hours on-duty

14 hours on-duty

14 hours on-duty

14 hours on-duty
STOP
DRIVIN
G
24 hours off-duty

14 hours on-duty

14 hours on-duty

14 hours on-duty

8 hours on-duty
STOP
DRIVIN
G
24 hours off-duty
STOP
DRIVIN
G
STOP
DRIVIN
G
STOP
DRIVIN
G
24 hours off-duty
8 hours off-duty
Start a new cycle
– resume driving 16 hours off-duty
Module 9 - 11

Commercial Vehicle Drivers Hours of Service
Cycle 2 Example
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Off-Duty Off-Duty Off-Duty

13 hours on-duty
STOP
DRIVING

8 hours on-duty

10 hours on-duty

12 hours on-duty

9 hours on-duty
24 hours off-duty

10 hours on-duty

11 hours on-duty
STOP
DRIVING
STOP
DRIVING
24 hours off-duty
STOP
DRIVING
24 hours off-duty
24 hours off-duty
Start a new cycle – resume driving

10 hours on-duty

8 hours off-duty

11 hours on-duty

9 hours on-duty

14 hours on-duty

14 hours on-duty

6 hours on-duty

5 hours on-duty

12 hours on-duty

10 hours on-duty

8 hours on-duty
STOP
DRIVING
24 hours off-duty
Module 9 - 12

Commercial Vehicle Drivers Hours of Service
Sliding Window
12
13
14
15
10
11
8
9
16
17
18
19
20
6
7
4
5
Day #
1
2
3
Total On-Duty for Day
13
8
12
10
11
6
10
9
5
8
10
9
8
0
10
11
0
14
14
12
Total On-Duty for 14 Days
119
116
119
107
111
114
120
Module 9 - 13

Commercial Vehicle Drivers Hours of Service
What is “mandatory 24 hours offduty”?
 No driving after 14 consecutive days
(regardless of number of on-duty hours)
STOP
DRIVING
AFTER
14 DAYS
ON-DUTY
 After 14 consecutive days on-duty, driver must take at least 24 consecutive hours off-duty time before driver resumes driving
Module 9 - 14

Commercial Vehicle Drivers Hours of Service
Day Off Example
Sunday Monday
STOP
DRIVIN
G

On-duty 24 hours off-duty

On-duty

On-duty

STOP
DRIVIN
G
On-duty 24 hours off-duty
Tuesday

On-duty

On-duty

On-duty
Wednesday

On-duty
Thursday

On-duty

On-duty

On-duty

On-duty

On-duty
Friday

On-duty

On-duty

On-duty
Saturday

On-duty

On-duty

On-duty
Module 9 - 15

Commercial Vehicle Drivers Hours of Service
How do drivers switch cycles, restart their current cycle, or change the start time of their day?
 Switch from Cycle 1 to Cycle 2 –
36 consecutive hours off-duty time
 Switch from Cycle 2 to Cycle 1 –
72 consecutive hours off-duty time
 Change start time of day or restart cycle using
Cycle 1 – 36 consecutive hours off-duty time
 Change start time of day or restart cycle using
Cycle 2 – 72 consecutive hours off-duty time
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Commercial Vehicle Drivers Hours of Service
Change
Start Time
Example
Module 9 - 17

Commercial Vehicle Drivers Hours of Service
Switch from
Cycle 2 to
Cycle 1
Example
Module 9 - 18

Commercial Vehicle Drivers Hours of Service
Summary of Cycle Limits
Cycle Limits (cycle specified by carrier)
Cycle 1:
 No driving after 70 hours on-duty in any 7 consecutive days
 At least 36 consecutive hours off-duty (to reset cycle)
Cycle 2:
 No driving after 120 hours on-duty in any 14 consecutive days
 No driving after 70 hours on-duty at any time in the cycle without taking 24 consecutive hours off-duty
 At least 72 consecutive hours off-duty (to reset cycle)
Day Off:
 No driving after 14 consecutive days (regardless of the number of on-duty hours) without taking at least 24 consecutive hours off-duty
Module 9 - 19