Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services Alfons A.M....
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Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway ServicesAlfons A.M. Schaafsma, Vincent A. WeedaProRail, Department of Traffic Control
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 2
Rail Transport Growth!
On existing network:
Efficient capacity use
(exactly right reservation, multifunctional)
Local measures (RailDelft, CompRail XI)
now: Approach
Feedback: Continuous Improvement
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 3
Objective:Matching Schedule and Operation
Operation according to output standards?
Yes No
Schedule feasible according to standards?
Yes
OK.
NoApply standards
pragmatically
1. Measures in operation.
2. Adapt the schedule to the
operation.
Apply DTM measures
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 4
Monitoring: Time Windows
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 5
Meppel: Synchronisation Point
2nd Train: Groningen .04Hoogeveen .42
.56/.571st Train:
Leeuwarden .04Schedule: arr .52/ dep .53
Zwolle
Meppel
South
Operation according to output standards?
Yes No
Schedule feasible according to standards?
Yes Is gaining speed possible?
1. Measures in operation.
2. Adapt the schedule to the operation.
No Apply standards pragmatically
Apply DTM measures
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 6
Meppel: Adverse Effects of Margins
Arrival delay Meppel (min)
Dwell time Meppel (sec) 1st Train
blocks way
Departure delay Hoogeveen (min)
Running time Hoogeveen-
Meppel (min)
2nd Trainruns into conflict
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 7
Dordrecht Bridge
Hour pattern Incidental capacity claim
6x/day
Operation according to output standards?
Yes No
Schedule feasible according to standards?
Yes Is gaining speed possible?
1. Measures in operation.
2. Adapt the schedule to the operation.
No Apply standards pragmatically
Apply DTM measures
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 8
1. Choose sync. points (limited #)
2. Allocate margin just before sync. point
Conflict-free Scheduling Approach
Early due to margin
Conflict (dotted line would be conflict-free)
Standard headway
Time
Distance
Same headway
Saved travel time
No margin on the route
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 9
1. Choose sync. points (limited #)
2. Allocate margin just before sync. point
3. Use feasible headway & cross times
Conflict-free Scheduling Approach
4. Differentiate standards (incidental trains)
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 10
Apply DTM Measures
QUANTITY bottleneck
Hourly capacity is not
sufficient
Example: Schiphol
tunnel• Platform capacity• Conflicting routes
QUALITY bottleneck
Hourly capacity is
sufficient,
Customer specs.
can not be met
Example:
Amsterdam- Utrecht
Operation according to output standards?
Yes No
Schedule feasible according to standards?
Yes Is gaining speed possible?
1. Measures in operation.
2. Adapt the schedule to the operation.
No Apply standards pragmatically
Apply DTM measures
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Example Quality Bottleneck
29
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32
26
Utrecht
Amsterdam
Schiphol
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 12
DTM: optimising the use of capacity in bottlenecks in 5 steps
1. Identification of bottlenecks
2. DTM arrangements for flow optimising
3. Effect on speed and width time window?
4. Defining of buffer after bottleneck
5. Measuring and fine tuning
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 13
Conclusion:Matching Schedule and Operation
Operation according to output standards?
Yes No
Schedule feasible according to standards?
YesIs gaining speed
possible?
1. Measures in operation.
2. Adapt the schedule to the
operation.
NoApply standards
pragmaticallyApply DTM measures
Operation-driven Scheduling Approach for Fast, Frequent and Reliable Railway Services / 14
“Traveling without a timetable” enabled by
A Different Approach to
Capacity Growth Planning
Capacity Allocation
Scheduling and Dispatching trains