Official Documentation

Everything you need to understand the YatriTech hardware & software ecosystem.

1. Product Overview

YatriTech (Project: YatraLink) is a transformative IoT-powered vehicle intelligence system designed specifically to combat Nepal's complex urban transportation crisis. With over 80% of the nation's 4.2 million registered vehicles being two-wheelers, Kathmandu faces overwhelming congestion, high fatality rates (28 per 100k), and widespread vehicle theft.

YatriTech addresses these challenges by transforming every vehicle into a smart node. This ecosystem integrates automatic crash detection, remote anti-theft immobilization, and predictive traffic analytics into a single, highly affordable platform. By combining real-time edge AI telematics with cloud monitoring, it bridges the gap between developing-world constraints and modern transportation intelligence.

2. Hardware Specifications

  • Main Core: ESP32 Microcontroller Primary processor responsible for sensor data acquisition, edge AI logic, and Bluetooth LE communication for localized authentication.
  • Motion Sensor: MPU6050 (6-axis IMU) Tracks real-time acceleration and gyroscopic positioning. Identifies sudden extreme impacts (>3g) or abnormal tilts (>70° drop) indicative of a crash.
  • Primary Network: SIM800L GSM Module Handles cloud server payload transmissions for real-time mobile app updates, live GPS tracking, and SMS/call SOS triggers.
  • Location Services: NEO-6M GPS Module Provides hyper-accurate satellite triangulation to guide emergency responders to the exact crash coordinate or track stolen vehicle paths.
  • Fail-safe Network: LoRa Mesh Backup offline communication array allowing inter-device telemetry bridging for SOS relay in remote/cellular dead zones.

3. Core Subsystems

A. Automatic Crash Detection

The hardware constantly pools data from the MPU6050 accelerometer and gyroscope. By mapping typical vehicular collisions against sudden multi-axis deceleration vectors, the edge logic (ESP32) accurately processes crash events in real-time.

Upon a suspected crash, a 10-second validation buffer engages. If the rider does not manually cancel the alert via a physical button or the app, the event is marked as a true positive. A high-priority distress loop immediately activates: pushing cloud webhook payloads via the SIM800L GSM, blasting SMS alerts to emergency contacts with exact Google Maps coordinates (via NEO-6M GPS), and pinging integrated paramedic dispatch dashboards. This rapid alerting is designed to dramatically reduce the 28/100k fatality rate.

B. Anti-Theft Immobilization

With two-wheelers constituting over 60% of all stolen vehicles in Nepal and recovery rates sitting below 35%, prevention is key. The YatriTech device is hardwired into the vehicle's ignition coil circuit using a high-load solid-state relay.

The ESP32 Bluetooth beacon actively searches for the rider's authenticated smartphone MAC address. If the ignition line becomes active but the authorized BLE signature is not detected within close proximity (approx 5 meters), the system classifies it as an unauthorized access attempt. The relay opens immediately—cutting engine spark and immobilizing the vehicle. Simultaneously, an onboard siren blares and an instant push notification is deployed to the owner's app.

C. Cloud Telematics & Traffic Analytics

Beyond individual safety, each YatriTech node contributes to a broader smart-city vision. Real-time speed, location, and braking data are anonymized and fed into the cloud backend. This creates a continuous data stream that allows city planners and traffic departments to dynamically manage traffic, map high-risk roadways, and move away from static, manual traffic counting.

4. Social Validation & SDG Alignment

Based on internal surveys (YatriConnect Transportation & Safety Survey, 2025) of over 350 respondents in Kathmandu:

  • 85% of riders express consistent safety concerns while commuting.
  • 89% rate automated crash detection systems as "highly needed".
  • 74% are prepared to adopt anti-theft immobilization technology if priced affordably.

By aggressively lowering market cost barriers while solving high-priority urban issues, the YatriTech ecosystem actively aligns with SDG 3 (Good Health and Well-Being), SDG 9 (Industry, Innovation and Infrastructure), and SDG 11 (Sustainable Cities and Communities).

5. Installation Protocol

  1. Remove vehicle seat/cowling to expose the main 12V battery and CDI/ignition coil lines.
  2. Solder the YatriTech VIN (Red) and GND (Black) lines directly to the battery terminals. (Internal power management handles deep-sleep optimization).
  3. Splice the RELAY IN (Yellow) and RELAY OUT (Green) into the ignition kill line.
  4. Mount the hardware box securely with horizontal orientation targeting straight ahead (critical for IMU baseline calibration).
  5. Power on the bike, open the YatriTech App, scan the QR code on the box, and complete the Bluetooth pairing bonding process.