# Real-Time Logistics Command Center

> Client: Regional logistics provider | Industry: logistics | Duration: 18 weeks | Canonical URL: https://yariinfotech.com/work/logistics

## Executive Summary
A unified operations platform for fleet tracking, dispatch, and customer updates.

## The Challenge
Dispatchers relied on spreadsheets and phone calls. Delays were common, customers had no visibility, and costs were rising.

## The Solution
Built a real-time command center with live tracking, AI-suggested optimal routes, automated SMS/email updates to customers, and analytics dashboards for managers.

## Results & Measured Impact
On-time deliveries improved to 94%, fuel costs dropped 18%, and customer support tickets for status dropped 70%.

### Key Performance Metrics
- **On-time**: 94%
- **Fuel cost**: −18%
- **Support tickets**: −70%

## Core Architectural Constraints
- Real-time GPS coordinate streaming across 150+ active fleet vehicles
- Driver mobile application optimized for battery preservation during 10-hour shifts
- Guaranteed exactly-once customer status SMS/email notification dispatch

## Initial Bottleneck & Diagnosis
Continuous high-frequency GPS pinging from driver devices drained smartphone battery levels within 4 hours of field operations.

## Key Engineering Decisions & Trade-offs
### Decision 1: Implemented velocity-adaptive GPS sampling algorithm
- **Rationale**: Reduced telemetry frequency when vehicles were stationary or at steady highway speeds, reducing battery consumption by 65%.
- **Engineering Trade-off**: Required spline interpolation on the dispatcher map view to maintain smooth vehicle animations.

### Decision 2: Idempotent event-driven dispatch queues
- **Rationale**: Prevented duplicate customer SMS notifications during cellular tower handoffs.
- **Engineering Trade-off**: Added dead-letter queue monitoring and retry telemetry.

## Engineering Retrospective
"Solving physical hardware and battery constraints early was more critical to field driver adoption than adding complex dispatch features."

## Technologies Used
Qwik, Convex, Mapbox, Twilio