MetroPossessions Sydney Metro access optimisation

Possessions optimisation and digital engineering strategy

Fewer possessions. More output.

A smart planning console for optimising planned and reactive work to deliver more performance output through a smaller number of possessions.

0 modelled possessions
87% task density
$3.8m avoided service impact
0 open safety conflicts
Fixed setup cost Amortised across four possession events
Maintenance deferral Tier 1 anchors locked at T-30
Moving plant 3 OTMs dynamically geofenced
Standards mesh RailML, RINF, GTFS, LRM

Planning suite

Seven connected menus for possession-count compression

Move from asset criticality and degradation forecasts through work combining, possession packaging, resources, rehearsal, and digital job packs.

Network overview

Metro geospatial possession map

TfNSW GTFS geometry
Sydney Metro geocoded railway map Metro route geometry, station locations, and possession package markers by T-minus stage.
Metro route geometry Station Possession package

Criticality model

Asset criticality editor

FMECA + RPN
Risk priority number 378 Tier 1 safety critical
Asset Failure mode Criticality Policy end-stop
TRK 5.8-7.2 RCF propagation Tier 1 18 days
PM CEN-24A Detection drift Tier 1 7 days
PSD CAM-02 Door timing variance Tier 2 35 days

Condition intelligence

Intervention planner

5.0 km5.56.06.57.07.5 km
Off-track Future use
L rail RCF
R rail Wear Corrugation
GPR
Gauge
Cyclic top
Cant
Twist
Off-track Future use
Generated proactive workbank
  • Grind L rail 5.46-6.20 km before RCF reaches re-rail trigger.
  • Tamp and stoneblow R rail geometry defect 6.86-7.16 km within 21 days.
  • Escalate wet-bed GPR signature for drainage inspection before next high-rain period.

Integrated workbank

Work combiner

Reactive + proactive + compliance

T-90 to T-7 workflow

Possession packager

Rules + de-conflict
Objective

Maximise critical work density while preserving handback certainty and customer impact thresholds.

Rule: rail stress and OHL RRV

No re-railing in the same section as OHL work because the OHL RRV is not stable on unstressed rails.

Rule: moving plant order

Tamping clears before grinding enters the same linear footprint, with buffer and exclusion zones retained.

Readiness timeline

T-90 to T-1 package gates

Package readiness

Resource planner

Plant, people, permits

Single possession simulation

Possession rehearsal

Rehearsal simulator

Selected possession sequence

Ready to rehearse
Sydney Metro possession rehearsal simulator A schematic corridor showing the selected possession footprint, isolation envelope, moving plant, and dynamic exclusion zones.
00:00
Ready to simulate

Runs one possession package through isolation, work sequencing, verification, re-energisation, plant paths, and handback gates.

Field mobilisation

Digital job pack creator

Mobile-ready
Package BK-04 · Day 2 night shift

Auto-assembled briefings, hazards, maps, permits, isolation diagrams, inspection forms, and handback certificates.

JOB PACK

Field delivery

Digital handover and assurance

T-90 Strategic scoping

Condition triggers, FMECA criticality, and early candidate possession sets.

T-30 Conflict detection

Graph traversal checks isolation footprints, engineering train paths, and shared sites.

T-7 Hard lockdown

Briefing packs, PLB locations, exclusion geofences, and worksite authority locked.

T+0 Certified handback

Digital infrastructure handover form closes hazards and restores train-ready status.