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crew Z is available to take the second work of crew P. In the second round, one crew is available - crew S. The overall results from this example shows that crew P will take
duty no.19, crew S will take duty no. 26 and crew Z will take duty no.16.
4.2.5 UNV
The objective of rescheduling in the event of UNV is to use available crews to replace the current crew, who is not available due to an emergency event, without using the
standby crew. The part of the duty later called uncovered duty without a driver has to be found crew to replace the missing crew. In this event, the available crews are those
who have finished hisher second work before 5 minutes of the starting time of the uncovered duty, are not yet at sign-off, and whose total driving hours after adding the
uncovered duty will not exceed 9 hours. The reason for the 5 minutes is to give the chosen crew 5 minutes break before starting the uncovered duty. If there is more than
one crew available, then the crew with the lowest driving hours will be selected. In this experiment we only do one round of rescheduling.
For example, crew P is assigned duty no. 16. Crew P is supposed to work for hisher second work from 12:10 to 13:44. However, because of emergency reasons, crew P is
unavailable from 12:44 to 13:44, which is one hour in total. Table 4.6 shows the information about the uncovered duty of crew P. According to the rules, we want to
reschedule crew P’s duty to any crew that finishes their second work 5 minutes before the starting time of uncovered duty, which is 12:39 after subtracting 5 minutes from the
starting time of uncovered duty, and is not yet at sign-off. Table 4.7 shows the results of the rescheduling. Time on duty shows the total driving hours for that day, additional
time refers to the period of uncovered duty to be covered, and total time is the total of driving hours after adding the uncovered duty time. The results show that three crews
are available to cover the period. Based on the rescheduling rules, crew D is the best option because it has the minimum time on duty. Therefore, crew D will cover the
uncovered duty of crew P from 12:44 to 13:44.
Table 4.6: Uncovered Duty of Crew P
Unavailable Crew Duty
No Start Time End Time
Total Time Uncover
P 16 12:44:00
13:44 01:00:00
Abdul Samad Shibghatullah
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Table 4.7: Rescheduling of One Hour Uncovered Duty
Crew Duty No
Finish Work 2 Sign-Off
Time On Duty Additional Time Total Time
D 4
12:10:00 12:41:00
6:36:00 1:00:00
07:36:00 E
5 12:22:00
12:41:00 6:43:00 1:00:00
07:43:00 F
6 12:34:00
12:53:00 6:46:00 1:00:00
07:46:00
4.3 Implementation with
