PossessionPlannerSydney Metro · condition to timetable

Work packaging

Packages are seeded by the lengths that matter for safety, then cut into possessions under the rule set. Plant, crews and delivery preferences are all set in the optimiser.

Night-time possession · escalate above 4 nights · 2 worksites · 2 tampers · 1 stoneblower · 1 grinder · 2 MEWPs · 3 track gangs

Objective

Run the optimiser to score a programme.

T-countdown gates

Strategic capacity planningT-100 to T-53 weeks0 possessions
Renewal and maintenance needs identified across all disciplines; capacity constraints negotiated with the operator. Extents are indicative.
new possessions · work may be added · dates may move · no override
T-52 possession lockdownT-52 to T-27 weeks0 possessions
Possession boundaries, times and dates are locked and the timetable is published against them. Work can still be stacked in, but a new possession needs an executive override.
no new possessions · work may be added · dates frozen · no override
T-26 clash detection and stackingT-26 to T-13 weeks0 possessions
Worksite limits checked algorithmically, incompatibilities resolved, train alteration advice and working timetable finalised.
no new possessions · work may be added · dates frozen · no override
T-12 supply chain and logisticsT-12 to T-5 weeks0 possessions
Materials confirmed, plant and crews allocated and locked. Adding work now displaces something already committed, so it needs an override.
no new possessions · work frozen · dates frozen · override required
T-4 tactical executionT-4 weeks to T-00 possessions
The PICOP takes control of the section on the night. Only condition-based spot work is added, and only with an override on the record.
no new possessions · work frozen · dates frozen · override required

Late change penalty

ChangeAccessDate

Charged210 delay min

A new possession 12 weeks out sits behind the T-12 logistics gate. Charged at 210 delay minutes against a 60-minute tariff for a night possession, and cannot proceed without a recorded executive override. That is 12 weeks out, behind the T-12 logistics gate.

Reason codeNoteAuthorised by (override)

Change log · 0 entries · 0 delay minutes charged

Nothing recorded. Every departure from the locked plan belongs here with a reason code, otherwise the freeze is a convention rather than a control.

Event blackouts · 5 protected periods

Vivid Sydney2027-05-21 to 2027-06-12 · no accessM1Festival crowds through Barangaroo, Martin Place and Central run past midnight every night of the festival; there is no bus bridge that covers the CBD stations at that volume.
New Year's Eve2026-12-30 to 2027-01-01 · no accessM1All-night special event service across the harbour. No engineering access of any kind on the M1.
Sydney Royal Easter Show2027-04-01 to 2027-04-13 · nights permittedMWSydney Olympic Park carries showground crowds all day. Night access remains available; no daytime or weekend closures.
Stadium finals series2027-09-24 to 2027-10-03 · nights permittedM1Post-event crowd egress through Central and Waterloo. Nights are workable once the crowd has cleared; weekend closures are not.
Western Sydney International opening programme2026-11-01 to 2026-12-20 · nights permittedWSAOpening and dynamic testing programme on the airport line. Planned maintenance closures are held off until the service pattern settles.

What this access pattern buys

0 productive hours are delivered in 0 nights and 0 daytime windows with no service withdrawn. That is the equivalent of 0 weekend blockades displaced, and 0 days of rail replacement buses not run. The programme still commits 0 blockades, costing 0 bus days.