| Examples of the use of the planned date determiner optionsThe following data are
used to show in greater detail how each of the planned date determiner options
work: Order line | From-address | To-address | Planned load date | Planned unload date | 1 | A | C | 08:30 | 17:10 | 2 | A | B | 08:45 | 12:05 | 3 | B | C | 12:40 | 17:35 |
Stops are created during load building. The creation of stops is
an intermediate stage of the load building process. The creation of shipments
is based on stop data. Stop at address | Minimum load date | Maximum load date | Travel time to stop | A | 08:00 | 09:00 | - | B | 12:00 | 13:00 | 04:00 | C | 17:00 | 18:00 | 05:00 |
The minimum and maximum load dates of the stops (time windows)
are derived from the earliest and latest load dates of all the order lines in
the stop. The calendars of the carrier and the addresses are also taken into
account. In this example, the loading, unloading, and waiting times are
included in the travel times. Earliest and latest possible date The earliest possible dates and latest possible dates are equal
to the time window borders. The time window borders are the minimum and maximum
load and unload dates of the stops. No further date calculation is
required. If you select the Earliest of Possible Dates option, planned shipment dates are equal to the minimum
load and unload dates of a stop. If you select the Latest of Possible Dates option, the planned shipment dates are equal to the
maximum load and unload dates of a stop. Minimum of planned unload dates To determine the minimum of planned unload dates, the planned
unload dates of all order lines in the route are taken into account. Freight takes the
following steps to determine the minimum of planned unload dates: - Determine the minimum of the planned unload dates of the order
lines of the last unload stop. This will be the optimal unload date for this
stop. In this example, the last unload stop is stop C. If the optimal date is
not inside the time window, the optimal date is equal to the nearest window
border. The optimal unload date at stop C is the minimum of 17:10 and 17:35 =
17:10.
- Calculate back the optimal load date for the preceding stop. In
this example, the preceding stop is stop B. Note that an actual load stop is
not present if no goods are loaded at that stop. The optimal load date at stop
B is 17:10 – 5:00 travel time = 12:10.
- Calculate the next minimum of planned unload dates of the order
lines in the stop. Now, the optimal load dates of order lines that must be
loaded (or that are already loaded) are included in the calculation to
determine the minimum of planned unload dates. In this stop, order line B's
planned unload date is 12:05. The optimal unload date at stop B is the minimum
of 12:10 and 12:05 = 12:05.
- Calculate back the optimal load date for the preceding stop.
The optimal load date at stop A is 12:05 – 4:00 travel time = 08:05.
- Repeat Steps 3 and 4 until the first stop is reached.
- At the first stop, the optimal load date is the planned load
date for the shipment. The planned load date of the shipment is the optimal
date = 08:05.
- Starting from the first planned load date, calculate the
optimal dates for all stops. These dates will be the planned load and unload
dates for the shipments. The remaining shipment dates are calculated using the
travel times = 12:05, 17:05.
Average of planned unload dates To determine the average of planned unload dates, the planned
unload dates of all order lines in the route are taken into account. Freight carries
out the following steps to calculate the average of planned unload
dates: - Determine the average of the planned unload dates of the order
lines of the last unload stop. This will be the optimal unload date for that
stop. (If the optimal date is not inside the time window, the optimal date is
equal to the nearest window border). The optimal unload date at stop C is the
average of 17:10 and 17:35 = 17:22.
- Calculate back the optimal load date for the preceding stop.
Note that an actual load stop is not present if no goods are loaded at that
stop. The optimal load date at stop B is 17:22 (the optimal unload date at stop
C) – 5:00 travel time = 12:22.
- Calculate the next average of planned unload dates of the
order lines in the stop to determine the optimal unload date. In this
calculation, the following data are included:
- The planned unload dates of the stop.
- The optimal load date of the stop (calculated in step 2).
- The order lines in the same load that are loaded at a
previous stop and unloaded at a later stop. These stops obtain the value of the
optimal load date calculated in step 2. In this example, order line 1 is not
loaded or unloaded at stop B and receives the optimal load date value of 12:22.
The reason for this is because, to match the unload date at the next stop,
order line 1 must start at the same load date. The optimal unload date of stop
B is the average of 2 * 12.22 and 12.05 = 12.16.
- Calculate back the optimal load date for the preceding stop.
The optimal load date at stop A is 12:16 – 4:00 Travel time = 08:16.
- Repeat Steps 3 and 4 until the first stop is reached.
- At the first stop, stop A, the optimal load date is the
planned load date for the shipment.
- Starting from the first planned load date, 08:16, calculate the
optimal dates for all stops. These dates will be the planned load and unload
dates for the shipments. The remaining shipment dates are calculated using the
travel times = 12:16 and 17:16.
Overview of the planned shipment dates for each planned date
determiner option Planned date determiner | Shipment | Order line | From- address | To- address | Planned load date | Plnd unload date | Plnd load dte of order | Plnd unload dte of order |
---|
Earliest
Possible Date | SHIP 1 | 1 | A | C | 08:00 | 17:00 | 08:30 | 17:10 |
---|
SHIP 2 | 2 | A | B | 08:00 | 12:00 | 08:45 | 12:05 | SHIP 3 | 3 | B | C | 12:00 | 17:00 | 12:40 | 17:35 | Latest
possible date | SHIP 1 | 1 | A | C | 09:00 | 18:00 | 08:30 | 17:10 |
---|
SHIP 2 | 2 | A | B | 09:00 | 13:00 | 08:45 | 12:05 | SHIP 3 | 3 | B | C | 13:00 | 18:00 | 12:40 | 17:35 | Minimum of
planned unload dates | SHIP 1 | 1 | A | C | 08:05 | 17:05 | 08:30 | 17:10 |
---|
SHIP 2 | 2 | A | B | 08:05 | 12:05 | 08:45 | 12:05 | SHIP 3 | 3 | B | C | 12:05 | 17:05 | 12:40 | 17:35 | Average of
planned unload dates | SHIP 1 | 1 | A | C | 17:16 | 17:16 | 08:30 | 17:10 |
---|
SHIP 2 | 2 | A | B | 12:16 | 12:16 | 08:45 | 12:05 | SHIP 3 | 3 | B | C | 17:16 | 17:16 | 12:40 | 17:35 |
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