Asphalt Definitions and Terms

Home Knowledge Base Asphalt Terms International Roughness Index

Categories

Categories

Tags

Tags

Aggregates Asphalt Asphalt Unscripted Cold Weather Energy Fall Focus Fillers Fire Safety Heat Inside Access Mix Design Optimize Series overlay Pavement pavement design Paving Safety Sealants Seal Coat Specifications Summer Technician Awards Texas Department of Transportation thinlay thin overlay TOM tools and downloads Troubleshooting TXAPA Awards TxDOT-TXAPA Awards underseal Warm Mix Asphalt Winter

Latest Posts

TxDOT Letting Report 2025 August

July 30, 2025

2022 TxDOT-TXAPA Quality Pavement Awards

July 16, 2025

2024 TxDOT-TXAPA Quality Pavement Awards

July 16, 2025

2023 TxDOT-TXAPA Quality Pavement Awards

July 16, 2025

Inside Access June 2025

July 10, 2025

Receive All The Latest News And Information From TXAPA

This field is for validation purposes and should be left unchanged.

International Roughness Index

International Roughness Index, or IRI, is used worldwide as a standard to quantify road surface roughness.