VNVishvanath Naik

✦ Operations case study · complete

Last-mile delivery throughput optimization.

A program case study exploring how a five-station delivery network could reduce departure delays while protecting service, labor, and safety guardrails.

DMAICOperationsKPI modelingProgram governance

Evidence boundary

This is an independent portfolio simulation. Operating records are synthetic, financial benefits are model outputs, and public sources provide context only. No employer data is represented.

01 Modeled outcome

A faster departure process with a conservative business case.

Dock-to-departure14.60 → 11.39minutes · 22.0% lower
On-time delivery80.2% → 95.6%+15.4 percentage points
Overtime20.91 → 9.99hours per van-day · 52.2% lower
Year 1 net benefit$406Kbase case after attribution

These figures describe the internal behavior of the synthetic model. They are not forecasts of results in a live delivery station.

02 Method

DMAIC turns the analysis into a controlled operating program.

  1. 01

    Define

    Frame departure reliability as the operating constraint and set service, labor, and safety guardrails.

  2. 02

    Measure

    Create van-day definitions, reconcile five process stages, and establish a 3,200-observation baseline.

  3. 03

    Analyze

    Trace 60% of dock time to the staging queue and state the causal mechanism as a hypothesis to test.

  4. 04

    Improve

    Model a six-week pilot combining readiness-based release, visual staging, flex roles, and exception ownership.

  5. 05

    Control

    Separate business targets from statistical limits and define WBR, escalation, and rollback mechanisms.

03 Operating insight

The staging queue is the largest controllable contributor.

Share of baseline dock time60%
Staging queue

The baseline model concentrates excess time in a serial staging queue: one active lane, arrival-order loading, no real-time queue trigger, and no assigned peak response.

The proposed pilot tests readiness-based release, route-zone staging, two reassigned flex roles, and a five-minute exception clock. Two stable weeks above the service target and within guardrails are required before expansion.

04 Project files

Review the model, the written case, or the executive deck.

Excel workbook01

KPI model

7,450 synthetic van-day records, data-quality checks, DMAIC analysis, pilot results, a financial model, and operating controls.

Download Excel model
Word document02

Program case study

The complete decision narrative, operating definitions, root-cause logic, rollout governance, risks, and control plan.

Download case study
PowerPoint deck03

Program overview

A concise executive presentation of the evidence model, intervention, results, economics, and scale-up decision.

Download presentation

✦ The next test

Validate the mechanism with live timestamps, a comparison wave, and explicit rollback criteria.

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