2023 to 2018
IRI units are in mm/m and Rut units are in mm.
Explore pages in:
- Environmental management of transportation and water projects
- Traffic control standards
- Construction products list and materials testing
- International Roughness Index and Rut Data
- Road construction resources
- Transportation policy submissions
- Design bulletins
- Design exceptions
- Pavement publications and roadway data
- Geometric and roadside design
- Geotechnical and erosion control
- Transport and engineering – FTP shared data
- Equivalent Single Axle Loadings for pavement design
- Quality assurance testing and reporting
- Horizontal Survey Data