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National Road Asset Management System

Mobile mapping and AI-based pavement condition assessment system enabling TANROADS to prioritize maintenance budgets across 34,000 km of classified road network.

Nationwide, Tanzania
2021–2022
Tanzania National Roads Agency (TANROADS)

34,000 km

Road Network Assessed

180,000+

Defects Classified

38%

Budget Efficiency Gain

12

Distress Categories

Transportation Project

National Road Asset Management System

The Challenge

What the Client Needed

TANROADS managed 34,000 km of classified roads with no systematic spatial asset registry or condition assessment methodology. Maintenance budgets were allocated politically rather than based on objective data — leading to underinvestment in high-priority corridors and expensive emergency repairs.

Our Solution

How TANGIS Delivered

TANGIS conducted a full mobile LiDAR and camera survey of the classified road network, trained an AI model to classify 12 categories of pavement distress from imagery, and built an asset management platform enabling TANROADS to query road condition, generate maintenance prioritization reports, and plan budget allocation spatially.

Deliverables

Full classified road network mobile LiDAR survey
AI pavement distress classification model (96% accuracy)
Road spatial asset registry
Maintenance prioritization platform
Budget optimization tools
Annual road condition reporting system

Technologies Used

Trimble MX9 mobile LiDARPython (PyTorch, OpenCV)ArcGIS Roads & HighwaysPostgreSQL/PostGISReact web platformReact Native field app

Project Tags

Mobile MappingAI AnalysisRoad GISAsset ManagementTransportation

Outcomes & Impact

Results Delivered

1

First comprehensive, objective condition assessment of Tanzania's classified road network

2

38% improvement in budget allocation efficiency — maintenance now prioritised by condition data

3

180,000+ individual defects classified and mapped with GPS coordinates

4

System adopted as TANROADS standard for annual road condition reporting

5

World Bank cited the system as best practice in infrastructure asset management for Sub-Saharan Africa

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TANGIS - GIS & ICT Solutions
TANGISGIS & ICT Solutions

Tanzania GIS & ICT Solutions (TANGIS) Limited

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