V1 / P1
Maintenance Plan P1
PPI at or below 60: 50mm Mill & Pave. PPI above 60: no maintenance.
- 401 · PCI → 92 · RQI → 90
- No post-treatment cooldown
V2 / P2
Maintenance Plan P2
PPI at or below 60: 50mm Mill & Pave; above 60 to below 75: 25m Local Mill & Pave; 75–<85: Routine Maintenance; 85+: no maintenance.
- 401 · 301 · 203
- Treatment-specific PCI/RQI, deterioration and protection settings
ROAD CLASSIFICATION
Importance index
Contract / Region-
Sub-region-
Road Type-
Location-
Traffic Volume-
Network Impact-
Complaints-
Priority Score-
ACTIVE SCHEME
Maintenance Plan P1
Road grids-
Year 30 PPI-
Nominal cost-
Present value-
30-Year Weighted PPI Trajectory
Server-calculated annual sequenceAnnual Programme
| Year | Weighted PPI | Mill & Pave | 25m Local Mill & Pave | Routine Maintenance | Untreated | Nominal cost | Present value |
|---|
FIVE-PLAN COMPARISON
Cost Analysis & Optimization
Five-Plan PPI Trajectory
Server-calculated annual sequenceFive-plan summary
All plans use the same selected scope| Plan | Implementation | Current PPI | Period Avg PPI | Period-end PPI | Nominal cost | Present value | PV Efficiency Ratio | PV Incremental Ratio | PPI-Point-Years Gained | PV Cost / PPI-Point-Year | Avoided Below-60 Unit-Years | PV vs P1 |
|---|
Annual Present-Value Cost
Five plans across 30 years| Year | No Maintenance | P1 | P1 Optimized | P2 | P2 Optimized |
|---|
RANKED NETWORK ALLOCATION
Budget Planning
Uses the current Planner scope.
ScopeAll roads
Units0
Starting PPI—
Analysis Period15 Years
Allocation scenariosAdjust one value and the remaining share is balanced automatically.
Budget-constrained optimisationMaximises cumulative PPI without imposing minimum treatment shares.
Target PPI fundingFinds the least-cost fixed mix that maintains the annual PPI floor.
Plan Comparison
Common baseline and lifecycle outcomes| Plan | Starting PPI | End PPI | Change | Average PPI | Cumulative PPI | Below-60 Unit-years | Nominal Cost | Present Value |
|---|
Weighted PPI Trajectory
Year 0 baseline through analysis periodAnnual Nominal Budget
SGD by funded yearAnnual Treatment Mix
Actual allocation of eligible UnitsWhy This Mix?
Full-scope optimisation evidence| Treatment | Selected | Forced Alternative | Cumulative PPI Δ | End PPI Δ | Cost Δ | Below-60 Δ | Reason |
|---|
Annual Budget and Allocation
| Plan | Year | Weighted PPI | Eligible | Restricted | Mill & Pave | 25m Local M&P | Routine | Untreated | Nominal Cost | Present Value |
|---|
Unit Maintenance Schedule
Lowest PPI and highest importance receive priority| Plan | Year | Priority Rank | Road | Segment | Lane | Unit | Sorting PPI | Importance | Treatment | Pre PPI | Post PPI | Cost |
|---|
ROAD CLASSIFICATION
Road Importance
Segment-level read-only classification and priority data.
Read only
| Road | Segment | Contract Region | OIC Region | Road Type | Location | Traffic Volume | Network Impact | Complaints | Priority Score |
|---|
PRIVATE WORKSPACE
Saved maintenance plans
No plans saved yet.
| Plan | Road | Scope | Priority Score | Decision tree | Implementation | Present value | Updated |
|---|
ROAD PUBLICATION
Import road-network workbook
Existing roads with the same name are republished while saved plan records remain intact.
IMPORTANCE PUBLICATION
Import road-classification workbook
Matched road segments receive classification scores; unmatched source rows are reported without forced assignment.
ALL USERS
Maintenance plan register
| User | Test number | Region | Road | Scope | Priority Score | Plan | Implementation | Present value | Updated |
|---|